My body is a dad body now and idk how I feel about it

Used to actually go to the gym, had abs, dressed decent. Now I own five gray t-shirts and jeans with mysterious stains. Haven't been to the gym in two years. I've gained like 30 pounds from stress eating at 11pm while the kids finally sleep. My wife doesn't seem to care but I catch myself in the mirror and barely recognize myself. Part of me thinks who cares you have kids now that's what matters. But another part misses feeling strong and not completely run down all the time.