I had experienced holding coins where the price dumped after 2weeks of its release, it grows rapidly on its first week but drastically drops lower than its ICO price, while checking it a while ago I think it hasn't recovered yet after a year.

You OP have some point, I think its really our choice and effort to find the best project we wanted to invest on.
If it failed, its still our choice what to do next, we can still HOLD it or just do Trading for a possibility to get a money back or get some profit as well.