Stop loss, good or bad?

It all depends what you are trading and your trading style but I would say a stop loss is vital for most people to avoid totally blowing your account.
 
I don’t see any disadvantage of SL unless setting is into a wrong place! SL is the best tool to protect traders trading capital.
 
For sure, SL should be in a right place, or it would cause additional losses. The level to place SL is as important, as initial entry level, but only few traders understand it.
 
Stop loss is generally good because it protects your capital by limiting losses automatically. It helps remove emotional decisions and enforces discipline. However, poorly placed stop losses can close trades too early during volatility. When used correctly with a clear strategy, it becomes an essential tool for consistent risk management.