I feel the same way and its really sad we cant purchase them already on a lower price.I did engage most of them but sell off on a cheaper price but still okay after all as long I do have the profits.
there will be many who regret not hodling.
It's more likely that there will be many who regret not selling. Altcoins often have sections of going up and down, it's just that this one is more dramatic than before. Some of the altcoins like ETH and Monero will stick around, but plenty of those altcoins are going right back down again.