I had one when the first came out. They're not actually good unless you have gorilla hands. It's like the vinyl of PC hardware. I later replaced my M with a mechanical Northgate that had a much better feel. Plus function keys on the side which was more familiar for me because I still used VT terminals at school.
But for me the real revolution was the original MS Natural Keyboard. It saved me from carpal tunnel that plagued the generation that grew up with computers. Now kids want to repeat their parents mistakes.
However I'm still guilty of buying many mechanical keyboards because they look so cool.