Only time I don't use a stop is when trading news or with a predetermined setup with a point or so target or minimally time-based scalp.
Other than that, I ALWAYS have a catastrophic stop in place, based on money. Sometimes, I'll adjust the stop after I've entered to match the structure of the market, but only in my favor. If I get a quick larger then expected move I'll replace the catastrophic stop with a protect profit trail.
Just as important, I only use brokerages/FCMs that maintain orders server-side... orders are not maintained on my client-side rig.
Trade On!