I never disable comments because comments are my way of knowing that other people are looking at my art and i'm not just talking to myself.. Seriously i love getting comments even if it just says "I hate you for no valid reason!" I still need to here opinion, Without having opinion i am nothing! I Also hate going down to a comment section trying to find an opinion i can relate to or to see other people's opinion on something and then all of the sudden the comments are disabled. Simply put.. I. HATE. DISABLED. COMMENTS.
I'm fine with it on art, some people don't feel comfortable getting criticism(or people give very negative criticism, if it could even be called that, about their art, I've seen it happen a bit), but on controversial stamps, it pisses me off. Why make a controversial stamp about something then disable the comments? That seems a bit cowardly IMO. I mean, if it's an old stamp, sure. After awhile every new comment is just something said in the past, but a stamp that is newer? It's pointless to bring up a controversial topic and disable comments.
Well for art you could just ask commenters to not give criticism. I think most people would be willing to cooperate. As for controversial stamps, I agree! People have the freedom to express their opinions but any resulting consequences or feedback are another issue.