Why are people pretending to be Jewish?

I’ve run across a few people over the past year that say they’re Jewish, but I know for one reason or another that they’re not.

I don’t get it. All I can think of is that they like the drama and want to play the victim, which isn’t helping anything.

It makes me really upset, but I’m not sure if I’m being dramatic. Have any of you come across people like that?