I was the higher income earner (by quite a lot) before I stayed at home. Actually, I didn't intend to, I just went off work when my teaching contract ended, went on mat leave, and just thought I'd go back to work.
But, once baby was there - no way could I even think of going back to work full time. I did do some tutoring in the evening for college students, when my husband was able to be with our son. When he was three to four, I did some substitute teaching - we were in a very small city, so it was doable.
Not so once we moved to the big city - times could not mesh between his school day and mine, so I didn't sub here. I did some subbing during one summer for adult inmates (they let me come late and leave early).
It frankly wasn't hard at all to make the transition - and I still paid off my student loan and my new car (bought when I was still single).
Husband worked his arse off to make sure we were taken care of - and, yes, there were times he had to work away from the city for a week or two weeks at a time, and that was really tough with a new baby and we had just moved to a new city with no family or friends... but we made do. He's in the trades, so there were also times he was not employed - those were a bit rougher...
As for being bored... no way! When he was a baby, we were always 'out' - always something to do! Then once he hit school age, our son was in a bilingual program and it needed lots of volunteers, so I did lots while he was in primary and elementary grades.
You know, generally staying at home it was SO much better for our family and, frankly, for our marriage.
But it's not for everyone, I know that. My next oldest sister couldn't even wait six weeks before she went back to work full-time after one of her babies - she has lots of her ego tied up with her work (but there's a longer story to that, too), and they are a very keeping-up-with-the-Joneses type of couple.

