I've been using Google for years - before anyone else knew what it was. I liked the clean layout and the relevancy of the SERPs. It doesn't seem as advertising driven (but we know that appearances can be deceiving....)
I also remember that I liked the fact that when Google first came out, it was touted as created by mathmaticians and scientists - I always figured that they had to come up with a better way to search....
I just can't seem to go anywhere else. Before google, I used webcrawler. (That'll date a person.)
I love the new interface with all my lovely gadgets.

The other browsers seem really unwieldy.
Maybe it's how the letters are laid out on my keyboard. g-o-o-g-l-e
Yep, super easy to type.