Why sell now. If you believed enough in a project to put in money you might as well hold on until it's finished. Not counting all the shitcoins obviously but the coins that people are properly backing. If the likes of STEEM drops low in a crash I will just use that as an opportunity to pick up more for when it strengthens.
Makes sense, but how many will follow through
I will anyway. Thats all that really matters. And enough other people will too if they believe in the future of the blockchain. Like the STEEM blockchain which has enough users developing projects which will attract more users for the next few years.