Since when does being married preclude getting a phd? I know multiple married phd candidates...
1. I don't think there are any part-time CS PhD programs, so I'd have to quit my full-time job.
2. My full-time job brings in 3/4 of the income and my wife isn't in a position to earn much more than what she's earning now, so we'd have to suffer a big drop in income.
3. The big drop in income (even if I get a TA or RA position) would force us to move from our home to either university or an insufficiently-sized (that is, insufficient for us + the children we plan on having in the next ~3 years) dwelling.
4. My wife has no interest in earning her own PhD and doesn't want to work while raising our children. Furthermore, I don't want her to work while raising our children.
I don't think it's possible to do without being a selfish arse.
So before you rule it out because you won't be able to take the 'traditional path,' I'd suggest visiting your university of choice to explore the other options first.