If you find yourself in a fair fight, something went wrong. Call it a crutch if you want but it can be useful and possibly life saving when used properly. Conversely it might potentially give away you position so use discretion. As mentioned earlier, don't forgo training with irons just because you have a laser and don't use it as a substitute for training either. And don't cheap out either. They're not terribly expensive and you may trust your life to it so spend the money and get a quality one.
Everything has limitations to go along with the advantages so always know what you and your equipment are capable of.
I don't collect guns, I accumulate them.