I'm fine with my wife taking care of the baby while I sleep in.
Why are you having your wife take care of the baby while you sleep?
I'm dead tired and I can barely function.
I understand that you're tired, but your wife also needs help with the kids. Putting it all on her isn't fair.
The lack of sleep gets to me and I don't want to turn into a monster.
I know it is tempting to sleep while you let her do the work, but you had this baby together and you both need to share in the work.