I did the same, Annie, when I worked and DH stayed at home - we could not afford childcare, either.
It was not 'helping out'. It was MY fair share of the work involved in being an adult who chose to have a family.
Because any other excuse is bullshit.
It just is.
Does it suck? Yeah, because I'm a lazy arse.
But I could have stayed single and childfree, too. That was a choice I chose not to take.
Life's a bitch.
If you earn enough to hire out the help, then do.
But if not, step up to the plate and do your role in the family or get out.
It really is that simple (disabilities notwithstanding and, having suffered from depression and been on and off medication for the better part of 7 years, no, I don't consider that an excuse to get out of wiping arses and doing the dishes).
And notice I have left gender almost entirely out of all my posts on here because what is good for the goose is good for the gander, IMO.