edited: (changed from question to statement)
If the Banks where about to give a service where the people can get a LOAN via Bitcoins I guess, it would be beneficial to all of us,The Banks and The Traders.
I think with this, trading would be a lot more easier, am I wrong?
You're wrong. Just look around there are a lot of banks not allowing crypto-fiat exchange, what's more loaning people for crypto? Besides the idea of loaning just for trading is not the best strategy because of the risk. I wouldn't recommend it. Just imagine if you borrow money from someone and invest it in the beginning of the year? You will be having a hard time to pay because we suddenly goes on a bearish trend.
Yes. It is still a very volatile market and for one thing, I am sure no bank will even want to be taking such a risk which is why they are in a higher percentage not be able to withstand the idea of decentralization.
Maybe over time when things change and we get to start seeing real life usage, more demand, less volatility towards the downside and so on, I guess we might things change, however, we also have to consider the aspect where the deflationary side of bitcoin might end up making it more of an asset than a currency, hence, the speculative nature.
Hence, I do not think, banks offering loans in bitcoin would really make any better impact as well.