As of now, crypto currency is the new trend and one of the most popular crypto coins is bitcoin. Bitcoin could be a good investment but risks are to be considered. Although, btc is at its peak atm, we can never say when it will bubble.

Although theoretically it could be managed, it couldn't be controlled in real life. Bitcoin is widely used and we cannot control people who use them. It is not only affected by one factor but several and no one is powerful enough to manipulate.

Bitcoin is the first successful crypto currency. It is what made crypto world what is it right now and has made huge contributions to a wide scope of market. Alt coins were just little coins that followed bitcoin's footsteps.

I don't think this is possible because first of all, one of bitcoin's features is that it allow transactions without risking your privacy and security. Loans and such, which you have mentioned, is not easy to process because it requires info (most of the time private ones) for them to be able to reach you if ever you decided to run from your obligations.

It isn't advisable to turn all your money to a single investment. This will decrease your chance of earning income. Imagine bitcoin going for a huge dump or even no value at all and all your money is invested in it, although this is not likely to happen, still consider the worst case scenarios. This does not only apply to bitcoin but to all kinds of investments.

Set a definite percentage of your savings from your income. For example, 30% of your income will go directly to your savings, and then the rest is for your other priorities. Do not spend before saving! This is the improper practice that most people do. They spend their money instantly including the percentage that is supposedly allocated for their savings.