I don't dislike Windows Defender, although, I don't think it's quite up to the standards of some of the big AV suites. That said, it's not full of bloat that most people would never use either. I have it on my new laptop at the moment, as I've not got round to installing anything else yet, and the only negative thing I've found is that it slows down Mailwasher when it checks for emails. Also, there's no additional banking protection, which most of the other big suites have on board.