I've been trying to stop using Google products, but I have to admit most of their web services are probably about as secure as you're going to get. Google has some of the smartest tech people in the world working for them, and everything I've seen tells me they take security seriously. If they're doing it wrong, I'm scared to think about other companies.

As far as I know, most people who quit Google do it because they dislike Google mining their data, not because they don't think Google is secure.