Since that's not the first time I got asked here as longer answer:
It can be stressful to do, people expect a lot, many only want freebies while only a few actually care to support SWers, not everyone out there is nice about it either and I honest cannot be bothered dealing with people who might be entitled. Not to mention that I got another job and don't want to earn extra on the side because believe it or not, you always gotta pay taxes too on everything.