is it a good way to grow my money? or it is risky or.. ?
Bitcoin must be the right way for your growing your money. But no one can be sure about the future so no one can give you guarantee about the returns and the rate of growth of your money. If you are ready to risk, you can invest up to 80% of your total investment money into bitcoins and keep the remaining 20% into other investment types.
Back in 2010 year ... In 2010 you can put all your money in Bitcoin ... In 2017 - it's big foolishness
You got any explanation why we can put all our money into bitcoin investment in the year 2010. At that time bitcoin was very new project definitely people would have been afraid to invest with all their money.
I believe you are talking about the percentage of return one investor might got from the year 2010. But I'm not seeing any difference in terms of risk between 2010 and 2017.
I put most of my fund in Cryptoland.
In term of risk, it was considered higher risk then now, it was the prize for the early investor/user.
Current risk is lower as is coming as proven tech and proven can-not-be-destroyed.
BTC is worth to become your choice to store money/wealth.