I think this is all about perspective. Does it matter if you are single or married with or without kids? You make time for your hobby when you can, and if you can't, you can't. However, as John mentioned, for some people it is important to have some kind of creative outlet available to keep yourself sane. Taking time out for yourself is not selfish - you need to take care of yourself too. But the reality for most of us is family, friends, and work all take up a large percentage of our time. I'm single and have no kids, but that doesn't mean I have a lot of time for photography either. I work full-time and have to do everything else for myself (no spouse to help with chores and errands). It's been a couple months since I picked up a camera that wasn't my phone. It's been even longer since I've been in a darkroom (last summer?). I'm late to the postcard exchange because if I did spend time in the darkroom, it would take time away from grading (although, to be honest, so does being here and/or watching YouTube), and I guess that would make me feel selfish, but school is almost done for the year, so I'll be free to feed my creative side and get back into the groove again in the week or two.