To be honest, yes I am waiting for prices to go down so I can finally buy. Actually I have some fiat sitting on the exchange and waiting to be converted to Bitcoin for over 2! months now. I was too greedy back then and always thought that price will drop again, but it just kept rising. Now I will be happy to even be able to buy at $9,000.
As for the question of OP, I think it depends on the strategy one is pursuing. If you are long term holding, like I am, its best to just suffer the losses and stay in, and wait for the market to recover. That has worked fine for me so far.