I never like using stop loss, I would rather just ride out the storm instead of letting a stop hunting whale pick up my coins for cheap. If your in any good coin it will always rebound if you are patient enough to wait it out.
I also did a mistake of not using a stop-loss during my few trades and the result is that my portfolios is too much down because of this. I would also recommend all the new and old traders to always use the stop loss because the market so much volatile and we never know if any coin may dump unexpectedly.