Oh goodness, I would never use vim as an IDE, or any purely text based editor. I pay out-of-pocket to use proprietary IDE's, and I consider it a cost of doing business. Vim to me, is simply a way to make minor changes to configuration files mostly. I would never dream of coding in vim.

Edit: TLDR - vim is sometimes better than sed for making changes to files, but in my mind that's about it.