I've got a 7 year old & a 3 week old.
Granted - the 3 week old is putting some restrictions on regular activities.
I think a lot depends on your wife - my wife is Asian so she is very understanding. Right now, as the baby is quite noisy & I have a company to run (like all Getbiggers), she sleeping with the baby in another bedroom. Of course, she does come in and give me a goodnight BJ before I sleep - unless of course, I'm out with the boys having a few beers until late, in which case, I get one whilst I'm out.