In the olden days – like, the really, really, really olden days – a father’s role was simple: catch food, drive your enemies before you, hear the lamentations of their women. Okay, maybe that’s not exactly simple, especially when all you have is a wooden club, but cavemen knew what it was to be men.

Years later it was decided that, while the father still had to provide for their children, they should also guide them towards successful adulthood by administering discipline, principally using ‘the rod’, ‘the birch’, ‘the staff’, or ‘the belt’, depending on their particular inclination.

Then we had this pesky thing called the sexual revolution, in which women decided they no longer wanted to sit around raising babies, baking cakes and waiting for their husbands to give them their pocket money, and instead go out and earn money for themselves. No bad thing in itself, but it upset thousands of years of a clear gender split in parenting roles.

The father is no longer the provider, because the mother can do that too. He’s also equally expected to help out with the night feeds, change nappies, give baths, nurture, cuddle, sing songs, mollycoddle, encourage and entertain. And discipline is hardly an exclusively masculine preserve. As a result, many men have lost their way, with nothing they can cling onto as an exclusively XY domain, unlike women, who have a sacrosanct arena of XX dominance: no matter how much I might want to, I shall never be able to give birth, breastfeed, or discuss pelvic floor exercises with my girlfriends – at least, not without embarrassment.

The thing is, we men are full of testosterone, ready to contend with nature red in tooth and claw, but there’s little call for that on the way to the chemist to get more baby wipes or when choosing between pink paint or floral wallpaper. So modern man channels all his brutish, preternatural manliness into the one thing we can make our own, and in this find fulfilment and transcendence: personal safety.

You mothers can wander about with the baby, smell the flowers, watch the sunshine; we fathers will protect you. That’s something we can do. That’s something you have to let us do so we feel like men. While you play in the play park, we’ll stand sentry, intercepting any and all potential dangers and inconveniences. We are a cross between Secret Service agents, bodyguards and ninjas. We stand ready to do violence upon those who would harm us and ours. We are men. Hear us roar! Miaow!

Trouble is, since I became a dad, I’ve realised that the world seems to have become an incredibly dangerous place, and I’m not at all sure I’m up to the task. Every hitherto friendly dog I pass in the street is now a potential child-killer, just waiting for me to drop my guard so it can maul my baby to death. I’m not just talking about Alsatians and Rottweilers – the village is full of prissy little Lhasa Apsos, fluffy, self-important, ten inches tall, all of whom will turn into Cujo if I’m not watching them. That’s without mentioning the cats, the size of tigers, that prowl between parked cars, sharpening their claws as they lust after toddler blood. It’s a freaking jungle out there, people.

And people too. The postman has morphed from a friendly chap who delivers the mail into a blood-thirsty psychopath who wants to take my baby away with him in his post bag. Elderly neighbours ask us if we have any plans for the day: why do you want to know that, are you planning on ambushing us and stealing our baby? You would not believe just how many kidnappers lurk around our village, ready to steal my nearest and dearest if I look away for even a second. Man with walking stick = man with offensive weapon, best avoided. Every bush, every tree, could be hiding the human equivalent of Rumpelstiltskin, and it’s my job to keep these bastards at bay.

Then there are the drivers. One mile an hour over the speed limit is one mile an hour too much: ‘Slow down, Lewis Hamilton, you’re not in Monaco now!’ The car park at the supermarket has changed from a place to dump my vehicle in order to purchase goods into a nightmare murderfest organised by the prison guards in Death Race 2000, filled with elderly people who reverse without warning and ignore the one-way traffic-flow system, yes, ignore it! And by the end of each car journey these days my eyes are bloodshot from glaring at every person along the way who has the potential to cause an accident which might harm my daughter – which, to be frank, is all of them.

Nature is just as violent. I see dog poo and wonder what diseases it might be able to pass on; I look at the sky and ponder whether or not little Izzie will make it home alive if the weather changes suddenly; I question if the trees I have walked under a thousand times will choose this day, this moment, to come crashing down upon us. Are those cows going to stampede? Can that bull get out of the field? Is the slurry pit giving out noxious gases? What if? What if? What if?

And that’s just outside the house. Inside, I’m increasingly suspicious that the TV might mean my daughter harm, or the dishwasher, or the tumble-dryer. Radiators are steam-filled pipe bombs, the boiler wants to kill her with carbon monoxide, the toilet is full of water to drown her in, the bedding can suffocate her, the plug sockets might arc electricity across the room, the carpet might cause burns, the food might poison her, the picture frame might brain her as she walks past and there’s the ever-present threat of the sofa swallowing her whole. I lie awake at night wondering if I’m doing enough to keep meteors from crashing through the roof or foxes from scaling the walls and sneaking inside through the air vents.

My parents asked me what I want for my birthday.

‘A fire extinguisher,’ I said.

All in all, I’m coping really well with my paranoia. But this, you see, is a modern father’s principal role: keeping our children safe. It’s what makes us men. It’s all we’ve got. Don’t take it away from us. Because you’ll need us when the zombies come.

Provided we haven’t worried ourselves to death first!