A female "friend" of mine remarked that SL was filled with stupid and insensitive men. I put the word friend in quotation marks, because I'm no longer on her friends list. She defriended me, but we periodically chat because we're often at the same clubs. I don't know why she defriended me. It bothers me a little, but not enough to make me ask her about it. Some information, I just don't want to know.
I don't meet many stupid people in SL. I think she must be mistaken about the stupidity. Insensitivity is far more likely to be encountered. Since we're all mostly anonymous and it requires so little effort to block someone, it's easy to be rude or abrupt with people. Plus you can't see them cry.
So be nice to each other. Those avatars are using real feelings.