I don't see why buying coins is better than mining. Gpu mining can be really safe since my power-off price of eth is 75, and nobody's sure of the future. So even if it goes to 150, I am still gaining profit, just extending my break even time. Holding the coins can be hard because you will never know what price will crash you. If you can't hold it, it means nothing. And most people can't hold it including myself. Some of the people bought at 1200 are still crying if he holds till now, and remember that was a bullish market. I guess people will never learn.