It's all about what you decide to do in your spare time. Again, choices, choices, choices and knowing what you want out of life and knowing yourself well enough to know what you want out of life.

For example, for someone with kids:

you can have the bus pick up and drop off your kids to and from school or choose to let them be car-riders.

you can choose to have public transportation carry your children to sports and artsy practice.

you can choose to have a nanny while you're a SAHM or not have a nanny to do the child duties. all you have to do is play with them.

For example, for someone without kids:

you can choose to do nothing or deal with life in general

you can volunteer, work, have friends, etc. I know people with and without kids that do this. My mom does and last time I checked, my mom had kids.

I have a very good friend who has Hodgkins Lymphome that keeps coming back. If that's not stressful to worry about, please explain stress.