The laser is one of the best training aids around. Dry fire and watch it bounce. Practice and the bounce will disappear. It will teach you trigger control and follow through. NEVER get battery or device dependent. Replace your batteries yearly whether they need it or not and practice without the laser. Remember Murphy's Law.
Patron Member NRA
"I would not be an old man if I had not been an armed young man." JTJ
I was taught to respect my elders but they are getting harder to find.
A laser is a tool that you use when you can't bring the weapon to your face.
There's no guarantee that you won't be injured or in a position where acquiring the sights is difficult. A laser is a tertiary aiming aid, but a necessary one in some situations.
Having a high quality laser like a LaserMax unit is a really good idea.
If you don't need it, don't use it.
The intimidation crap is just that. If someone is not intimidated by having a gun pointed at them then a laser isn't going to make any difference.
With respect to Murphy's Law, as another poster pointed out, if it's possible that you will find yourself in a gunfight where you can't bring the weapon to your face then that's the fight you'll find yourself in. Whether something runs on batteries or not has no bearing on if/when it can fail.