Never been a foolish idea since its proven that holders gain for that decision they are doing and so far I could up read some good statement regarding that everything is doing good especially on their decision to hold. The one I usually see crying for their losses are those newbie traders which hopes for something great to come up each trades with their picked coins in the market, but their expectation didn't show up and what they encounter are those unpredictable situation which cause them to lose their money.

But also if you hold then make sure you have target year on when you gonna sell your bitcoin so that we could able to enjoy the profits we got since that is what we are targeting for having decisions to hold our bitcoin.