Would you want to advance in the other job? In other words, would advancement mean longer hours, more stress, etc.?
I am in a job with no advancement right now, but I'm OK with that. My hours are so flexible, and with one kid in school and one in daycare, I am extremely grateful for my schedule. I'm able to help out at school, attend meetings, hang out with kids on the MANY days the schools are closed, etc. I get to have breakfast and dinner with them everyday. Laundry and cleaning get done while I'm home and everyone else is out of the house. I don't stress about work after 5:00.
Yes, I'm not advancing or making more money, but for me it is totally worth it.