OP, I hope your DH continues to read the thread. I am a dad and spend about two thirds of the year at home doing all the boring, repetitive chores, shopping, cooking, cleaning and taking DS to seemingly endless activities, playdates (hate the word!) and nursery. It's not a doddle.
Hear that, Mr? It's no fucking party. I yearn for the few days I get to go back to work. Am desperate to have adult conversation with people who wish to discuss subjects that are not their own children.
Playdates are so completely not like having a beer with your mates. You're there because the kids get on well. The parents of your kid's friends may well be people you don't like, and are now forced to spend time with. There may be more children there, babies, even, with their puking and crying. No matter how well the children get on, they will squabble, argue, snatch toys and scream, scream, scream until your head is splitting and you are reaching for the bottle/valium.
Hanging out clothes, washing pissy pants get old so quick. As does hoovering. As does the endless cleaning of the kitchen. It's all so totally thankless and unrewarding. You have no idea how lucky you are to be able to go out and earn the money.
If maternity leave is so easy, you do it, matey. See how you get on.