Your ISP does not mine/sell/use your user data or logs and only disclose that info upon a court order.
Clearly you have no concept of how easy it is to obtain your ISP logs. Numerous agencies that have 3-letter abbreviations don't need court orders to obtain such information.
Google actively offers free stuff in order to mine/sell/use your data personal info.
Yes, and there are plenty of other services you pay for in which your privacy can be breached as well. Not really sure why giving your information to Google is any better or worse than giving it to say... Amazon. Or Apple. After all... iTunes is free.
Apparently you are ok with that but many people don't realize the level that Google/Apple/Microsoft (Bing)/Yahoo/Amazon/Facebook/Twitter/etc... goes to to harvest your information.
Fixed that for you.
What if I gave you a free house but put a hidden camera in every room, went through everything in your mailbox, went through your garbage, logged your schedule and sold it all to the highest bidder?
I wouldn't care, because you can do that in my current house (that I pay for) now with very little effort. To comment on your poor analogy, I wouldn't (and don't) particularly care about Google because I understand that anything you put on the internet is up for grabs in the first place.
Bury your head in the sand (or wherever) if you want but it doesn't make your info safe.
You're the one with the buried head if you honestly think that by not using Google Apps your information is "safe."