LOL!! I'm laughing with you, not at you, dear...
I have resentment about fixing dinner, too. I was the main cook in my FOO, and through 4 kids and 2 husbands. Hubby #3 cooks very well - when I can persuade him to cook. The running joke in our house, is that we need a mommy to give us "after school" snacks and fix us dinner.
And I think that's the core of my resentment about cooking - that need to walk into home and be taken care of. When I'm relaxed, no time pressure, no fatigue at the end of the day - I enjoy cooking. I'm a fairly accomplished baker. Have been trying to see dinner time, as an opportunity for self-care and creativity; to try to work my way through it. It helps, that my hubby does his part most of the time - we work in the kitchen together. Maybe your son's old enough to start helping - so it'll become a shared time instead of a chore. My daughter & I used to connect, while cooking together when she lived at home.
Then, too, I believe that the quality of attention and care put into the meal actually creates additional "nourishment" - not so much physical, but metaphysical. So when I just nuke something out of hunger - it's empty calories in more ways than one and doesn't really satisfy the need to "have a meal"... the reconnection and enjoyment of coming home and sharing food. It's an area I really still need to work on.