is it risky to turn all my money to bitcoins? anyhow this money sits in the bank and do nothing for!
Its highly risky. There is no set laws in any country related to it. Moreover its heck of volatile. So investing all your money in bitcoin is going to give you a lot of heart shocks each day. But yes invest 30-40% of your money for long term.
I think 40% also bit high. I think we need around 10 or 20% only to invest in crypto since crypto is very volatile and risking more saving would be dangerous for you and your relative's daily life.
Risk only the amount that you can afford to loss.