I don't think Randall does xkcd out of pure altruism. I also don't think he does it just for fun (although I believe that's how he started). I think it's a mixt

I don't think Randall does xkcd out of pure altruism. I also don't think he does it just for fun (although I believe that's how he started). I think it's a mixture between the two. If the comics were exactly the same, I'd probably still enjoy them just as much, no matter the reason Randall does them. I feel that we'd be able to tell by the quality of the work and the dedication that he puts into them if his reasons for doing it were different.