simply because the quoted above is not true at all!

you are just looking at a short period if profitability in altcoins and think everything is good and easy. but let the falls begin and then when you were left thinking what the hell happened to my money, you can understand what i mean.

and it is not all about profitability. it is also about predictability too. when a market is manipulated and sometimes heavily manipulated it is not possible to predict it.