I use one when I have to connect to a public access point, or really any network that's not owned by someone I know and trust. It's not a perfect privacy/securi

I use one when I have to connect to a public access point, or really any network that's not owned by someone I know and trust. It's not a perfect privacy/security plan -- you're right that I can't completely trust the VPN provider either -- it's just better than the alternative.