Not the parent but I have the same reaction, and I wouldn't describe my experience in big IDEs as "comfort", just less pain. I use them with Java only out of necessity, and only on huge projects I didn't have a part in designing up front.

Every other programming language I've used a lot of (spanning from assembly to lisp) I've found it most pleasant to work in vim, even in large projects. I suspect the only other environments I'd want an IDE would be for iOS development and C#.