I like my CT grips for several reasons:
1)I have large hands and even the notoriously large Glock grip is small for me. The CT grips make it better, for me. Would be worse for others.
2)See Frank's point about skill and training. I am neither skilled nor trained. I assume that a laser will benefit me.
3)I know there's a good chance that a defensive scenario will have me in a less than flattering position. Angle, sight picture, proper form, don't matter with a laser at typical SD distances. I can "aim without aiming", such as it is.
4)It's funny to watch the cat chase the laser. Yes, I only do it when I clean the gun and it's disassembled. I might be willing to destroy the cat, but the wife would be angry at the hole in the floor.