@ossobuco,
Osso, you are not being tricked. This is Google's format now. You are one person, where ever you go, regardless of (for lack of a better word) the aps you use or don't, google is the whole format.
Microsoft is doing the same thing, so are new computers, even browsers.
You sign up for an account. It will remember passwords, your home address, favourites, bookmarks, music, mail and so on.
I realize you didn't sign up for the whole kit and kaboodle, none of us did, but this is what "the cloud" is about.
Again, once you enter your password, you can access your email and choose never to look at another page or not. Or you can and you'll have the same general experience regardless of whether you're at your computer at home or at the library, a friends or in mexico. Many people find these feature extremely helpful.
But, if you choose to ignore them, it wont change anything.
If its a paranoia thing about privacy. Trust me, we are all too late. And google already has your information. They won't get anything more than you give 'em.