Yes, I did a search - I have not seen the issues below discussed, although it may be that my search technique was flawed.
Anyway, let's suppose a handgun with a laser. As I understand it, the positives are:
1. Quick, easy aiming in low light conditions
2. Deterrence factor for anyone who sees the red (or green) dot
3. No need to bring the firearm up to eye level
But on the negative side:
1. The laser is not passive, and the target will see the user
2. The target can dodge or take evasive action
And on the "Hmm" side, there is the scenario of a totally dark environment with no light at all. Tritium sights won't work - the darkness conceals the target. A laser would provide some dispersed light to illuminate the target.
Are infrared lasers the answer? Perhaps. But that implies night vision goggles, which probably is a bit beyond my needs.
The laser would probably be something such as a Crimson Trace (grip), or LaserMax (recoil rod) in order to avoid hanging things on the weapon. Of course, wisdom might dictate some other choice...(input always welcome)
In this case, the anticipated role of the weapon is home defense, concealed carry, or some combination.
As always, all thoughts will be appreciated.