I don't use IDEs either. A plaintext editor and a console window (for compiling, testing, and the occasional grepping) is enough. IMHO someone who is reliant on IDEs and autocomplete is in the same category as not knowing how to type without looking at the keys on the keyboard --- yes, you can get by, but you will never be able to code as fluently and effortlessly as those who can think deeply about the code entirely in their brain, and you'll be frequently writing code that looks reasonable when viewed in isolation but obviously redundant and/or inefficient if considered as part of the bigger whole.
