Having to attain high rewards or profits in investments, you also need to gamble high risks. There is no gain if there is no risks taken. Life is to simple. You need also to exert efforts if you wanted to gain what you want to attain. Well, here in the world of crypto currencies, I don't think that there is no move you will do to gain without exerting any risks. And also, people should always remember that a true investors is a risks takers.
I agree with you, High risk will result to high rewards but most importantly don't risk if you're not capable of loosing your funds, Risk is good for those who have money to spare in investing, Huge risk will also be a result in loosing, so better have a good mind set in risking your funds.