I've never met RMS, and as far as I call tell he might be a bit weird, but I still owe him the greatest degree of respect. Thanks to him, and to people like him, I was able to grow up with software I could hack on my own. I started learning proper programming in the early 90's, and I could do that using free (I'm not going to qualify what type of free we're talking about. If you don't know, you're not on HN) software and the reason is for people like him who lead the way
(ok, this post might be more about protocols rather than software, but the main gist of my point still remains)