I had not really been tempted to add a laser to a defensive* handgun, until I acquired an AR/M4 handgun, a couple of years ago. Using normal sights, with a cheek-weld on the buffer tube, is work-able, but it seems to make plenty of sense to brace the rear of the receiver, or the side of the buffer tube, against the pec muscle area, and maintain target focus, with this type of weapon. A rugged, high-quality laser is on my end-of-June shopping list. (Notably, sights that are typically used on rifles are on the BATFE’s proposed “workshheet,” which moved a laser from my “someday” wish list, to my mid-summer 2021 list.)
I do have training and experience with using lasers on PD-issued Tasers. Based upon this, I do believe that lasers have some amount of utility, on holster-able-sized handguns, but I have generally carried handguns that point quite well, in my hands
*I worked for a police department, from 1983 to 2018, which did not allow us to use laser sights, on any firearm that we would use in defense of self, or others, on or off the clock, with the one exception being home defense, so, I would have been limited in my ability to use a laser, on a handgun, anyway, until recently.