Why do cats love to hunt?

My game bag is currently truly impressive. I am getting faster and better at catching and killing rabbits. My score now stands at about 20. Rabbits are take-away meals for cats like me. Celia says that the garden is now strewn with corpses. I don't know why she should complain. I'd bring them into the house, except that she has installed a cat flap which is just too small. Earlier in the summer (so called) I carried in several youngsters, mostly dead but some alive. But the rabbits are now young adults and I just can't squeeze them through. What does she expect me to do? Bury them, as if I was a dog?
Sometimes I eat a bit of them. Sometimes I don't. Occasionally William eats a bit too. It just depends on how we feel. We do not hunt to eat. Of course, were we living in the wild we would. But because we have plenty of cat food, we just hunt. Mostly I just go and do it. But, when I feel philosophical about it, I try to think why I do it. It's a drive inside me. An instinct. And the glorious moment when I spring into the whole sequence of eye, stalk, pounce, grab and bite, just thrills me. A great cascade of excitement and joy runs through me from the tip of my nose through my whole body down to the last centimetre of my tail. This moment is what I was meant to do. This is what I am - a predator. At that moment I am fulfilling my true destiny.
The only flaw in this glorious life is Celia the Moaner. She whinges ceaselessly. If I bring in a living rabbit, she grabs it with a towel and takes it away. (I don't think she realises that I scoot out a bit later, sniff the air, and go straight to where it is and grab it again. Mind you, occasionally she can hear the rabbit screaming with terror. She hates that though I find the screams immensely thrilling.) She's not much better about the dead ones. "It's like the Somme battlefield. It's disgusting," she said to Ronnie. Her tone of voice was disagreeable, very disagreeable, but I know for a fact that she dislikes the way rabbits eat her vegetables. She bags the corpses and throws them in the dustbin. She complains that I don't eat them. If she feels like that, why doesn't she eat them? Many humans enjoy rabbit pie.
I have added a picture of a particularly fine specimen that I left near the car. She says it is revolting to put a corpse on a blog. I say it is a trophy not a corpse. I am proud of it. I wanted to pose with it, one paw uplifted in triumph but she refused to take the shot. She thought it might make readers feel she was an accessory to murder. What hypocrite she is.
She is a kill-joy (literally) on the topic of me and rabbits.