But data is important on catching criminals so FBI are only the one who have it.
Definitely not. Unless you really never used their services, even massive companies like Google, Amazon, Facebook, etc has your data. In fact, it's safe to assume that these companies even have more data about us than the FBI.
Yes but finally all of these data go with FBI or they have access on it anytime they wish, just remember how kickass torrent owner was arrested (combination of Apple and Facebook).
I would say that there is no true data protection, even PGP had serious bug that was found recently. Data can't be protected well forever, current encryption things are valid for limited time because in future there will be another issue found in them, we are developing nonstop after all.
But still there are some services that have higher security than popular ones among population.