I am personally holding a lot of altcoins. I am holding them because I am waiting for the right price for me to sell them. That means I have a great belief in the projects like most of holders do. Of course it is our belief and trust that gives us courage to hold them because if we all have to do is doubt, then we are going to go down. I ain't saying doubt is a negative thing because it is the safest way to weigh things. Hold what you believe and what you love.