Most stable way to grow BTC is by covered call options. More risky but high reward way is buying outright out of the money calls if you believe the prices will go to the moon! Still I prefer a way without risk: Selling calls and buying the underlying. You heard it right: Even BTC prices turn red, you will be still profitable, in short: regardless of the market moves you always profit. Don't expect 10 fold increase in a month or a year, but a stable and safe way.

Many users Bitcoins do not trust banks or do not want government controlled their money. According to analysts, among the supporters of virtual money, and many of those who previously preferred to invest in gold.

The growing popularity of Bitcoin also reflects greater confidence in a new generation of technology, rather than to the authorities. Global banks, big investors and traders.
There is no reason not to trust them. They know their stuff.