Whether you love or hate MS, and whether or not you're exclusively interested in FOSS and Linux, Windows is the still biggest competitor to Linux in desktop and enterprise markets. Your position regarding Linux or Windows shouldn't stop you from looking at other competing software products.
Bashing Windows maybe fun and all and we all enjoy that every once int while, but constantly bashing for the purpose of bashing is simply unproductive. What I'm saying is that we should probably learn from others' successes or failures. Isolating ourselves from the rest of the technology world doesn't help advancing the FOSS technology and community.