There are many terms for guys like this.
I chose to go with weenie.
This guy featured on Slate's most recent advice column is upset that his wife wants to stay home to raise their child – arguably the most important accomplishment a human being can achieve – instead of focusing on her career, even though he makes plenty of money for them to pull it off.
He actually suggested to her that she might have a mental illness.
What depths of depravity have we come to in our culture?
Our own Seth Dillion said it best:
At least Slate still had the common sense to say "you're looking at this question in a rather reductive, self-focused kind of way."
Since this broski is looking for answers now that he's "suddenly the breadwinner," I'll tell him what to do: