There is no reason why it can't be the man who gives up the career to be a stay at home Dad. I'm in a similar situation to you Luke and to be honest I find the idea appealing (not giving it up completely, but being the one who takes the paternity leave and so on.) I had about 6 weeks off work recently due injury and I didn't miss it one bit. The fact is for us that we need two good incomes so we both fly and make it work.