My dp and I both work part time. We don't own but happily rent a nice house. We have a son 4 why goes to school everyday of the week. We don't rely on anyone for money and have just enough for rent, food and a few treats. We can't for example afford a foreign holiday but we like caravan and camping holidays in the uk.
We can't really afford much new stuff but are happy with what we've got and can afford toys for birthdays and Christmas etc.
My days off look like this:
Get up at 5 and play with ds. He is awaiting a diagnosis of high functioning ASD and everyday starts at 5 and its full on play time till he goes to school. The chances of him playing alone or watching tv are zero so it's full on for a while.
I go back to bed after dp takes him to school and surface about 10-11ish 
I then potter and do house work, go for an hour or twos walk and just enjoy myself. Ds comes home and it's the usual routine that most parent have in the evening.
The same goes for dp. He works about 4 shifts a week and when off does gardening, cooking and sleeping.
People often make comments that if we worked more we could have so much more but we're happy as we are. The same goes for more children. Ds is a star but as most parent of children with ASD, life can be hectic and unpredictable and we are happy with just the one.
People constantly have to let me know how busy their lives are and it makes me feel a bit guilty that mine isn't.