You aren't being unreasonable, but men are just men. I've not yet told my DH I no way want to go back to anything full-time. We can survive without my wage, so whatever I earn would just go as savings... btw, he earns a little more than we need all by himself, we just "need" the extra money for things for him to play with. I'm hoping he sees this for himself once I stop getting paid!

I agree with Sherie, tell him when he's not going to be all snappy because he thinks he's tired. If you can, try putting away half of your wage and his wage now, so you'll know what a part-time budget will be (and you'll have savings if it all goes horribly wrong in a couple of months' time, which you won't have the benefit of post-baby).