You actually echo a lot of the fears I've had about Google over the last few years.
I started to use Google way back when they still powered Yahoo's search engine, but I became more and more uneasy with their services as they grew. (And when I felt their search results were becoming less relevant to me.)
The fact that people blindly use them for all of their Internet life (mail, docs, search, etc) is as scary as people who use News Corp services as their only source of information... (or Wikipedia, I suppose).
I don't believe Google are doing anything "evil", but they are not the good guys people make them out to be.
But maybe I'm just a paranoid cynic, eh?
Anyway, I was just glad to read I'm not the only one who feels nervous about Google's rise and power ;)