The two should never be mixed up because banks and bitcoin are different.
Only newbies or die hard government haters believed for more than a second bitcoin is going to replace banks..
How?
I want to take a loan, where do I go? To the shrine of satoshi and pray?
I never visited that part of the forum myself, but folks are saying that there is a whole board meant specifically for loaning out and thus taking loans in bitcoins. I for one wouldn't give you even a single satoshi (you don't look trustworthy to me) but someone may be willing to help alleviate your pains if you are seriously looking for that (not for free, of course). Though I have doubts that you really want to take a loan
Since otherwise you would have known where to ask (for a loan)
What you said is true, indeed
But you should not forget that banks are free to take as collateral whatever they might see appropriate since they know the identity of the person looking for a loan. Right now, loaning out bitcoins is a very risky business for banks (as has been explained numerous times) but banks are certainly not the only ones who can loan money. Some individuals are doing that in real life, and they make a living out of that. I guess they could loan bitcoins too if there was demand for Bitcoin loans