Would you keep your paper money in other peoples wallet? I don't think so.
If you keep your "paper money" in a bank, it's sitting in an online wallet. There are no private keys for paper money, only the paper money...so if it's not literally in your possession, you don't own it.Bank IS safest
You can compare it like this:
Bank(paper money) - hardware wallet(bitcoin)
Your wallet(paper money) - online wallet(bitcoin)
Other peoples wallet(paper money) - freebitco.in(bitcoin)
It's my opinion about freebitcoin as wallet, i still like faucet and lottery
