I'll clarify: I'm specifically talking about junior devs who are having a lot of trouble with their IDE, have no experience with anything else, and aren't willing to give any other options a shot. It shows a lack of curiosity and/or desire to explore new tools. Some of them don't even know how to do a build outside of Eclipse (worse, I've known some "senior" devs with the same problem).

I know one good senior dev who prefers Eclipse. I'm not sure why, but he doesn't seem to have any major issues with it, and he's good, so... ok.