As far as housework, you'll find out that you're capable of 10X what you previously thought possible. Yes, it is hard work. There is always something that needs cleaning. There are always previously essential chores that need to be pushed back to the point that you worry about someday living in squalor. But then you have those days—days you used to relax on the couch and watch TV—where you knock out a bunch of stuff and get the house back to a presentable state.
And in between all those chores you have this awesome little baby, whose every developmental milestone will utterly fascinate you, whose little face and hands will delight you, and whose every utterance will go right into your brain stem. My wife and I didn't plan to have a baby, but we had one in July. It's been hard, it's strained us to the breaking point, but that daughter of mine is worth all the trouble. And I never thought of myself as a particularly parental sort. I can actually understand a lot of the frustration and dissolution some people have with parenthood. I get it. And I constantly long for the days I could walk down the block and have a few pints with my friends and play trivia on a week night. But if I had to chose, I think parenthood—so far—is better than that.
Your experience may vary.