Wonder Killers.

The term "wonder killers" refers to people who think it's fun or productive to more or less shit on the things other people love.

I find people who do this frequently to be among the worst human beings on the planet (which is not to say I've been totally innocent myself). What sort of person gets joy by consistently veering off the metaphorical road to dump on some hobby, or sports team, or creative artist, or other activity that other people love, just because they can?

Leave people to the things they love. Let people to enjoy the wonder and awe and pure joy of these pieces of their lives.

In other words: If you don't have anything nice to say, just STFU.