Honestly, when you're in the depths of the most thankless years of parenting, it's not helpful to be reminded that ~someday~ you may be able to do adult things again. It's every bit as maddening as being told to enjoy these moments because they go so fast as your child is having a screaming meltdown in the middle of Target. It's absolutely true, that the worst of the soul-sucking part of parenting is almost over when your kid is 3, and you're within reach of being able to have endless conversations about Roblox with the amazing human you made.

OP would really be helped by finding other people who like his son to babysit, and finding ways to reclaim being a self in the interim.