I have a wife, kid, and a whole mess of dogs. Job is fairly demanding and I have some other loose-ends from past projects that require some babysitting. I aim for at least 15 minutes per day in my wood shop, a little more on the weekends. It's enough that if I plan well, I can practice interesting things or make progress on projects.

Wife and two kids, here. 30 minutes a day is what I strive for, with breaks on weekends. Totally feasible.

Its a pipe dream if you have a wife and kids. I get to paint every week if I specifically make time, but there's no way I could do side projects everyday and not burn out from doing nothing but work.

I'm married with two kids in high school.

For me, it's not painting, but playing music every day. I don't always get to practice, but the days that I miss are more likely be due to me procrastinating than to actual lack of time.

I also spend some time every day at work, doing some coding, even though I'm not employed as a programmer. Oddly enough, it makes me look quite busy, and nobody has ever questioned whether it's actually related to my job or not.

Its feasibility is directly dependent on how many other things you do every day / how much free time you have after subtracting kids/commute/etc.

It's generally not difficult to do any given thing every day. It's difficult to do 20, though.

i have seen only one example, everybody else stopped painting or paints once in while.

It's possible, but you have to be disciplined. I try to get up an hour or two early every day at least for a week per month to put some quality time into the studies/projects. Other times it's 10 minute chunks that you squeeze in throughout the day which aren't productive.