It can be difficult to see the dot of a red laser in sunlight, but I can see mine no problem indoors in a normally lit room (no target identification problems). Since I work and sleep most of the time indoors, I see value in having the option of a laser most of the time.
I see laser sights getting bashed here all the time, so I'd like everyone to consider this scenario: you get into a verbal altercation with a man who is 20 feet from you. He pulls out a knife, yells "I'm going to kill you!" and walks toward you.
Choice 1: you draw your pistol and aim center mass with a hard front sight focus. You'd rather look at the attacker, but this is what your professional training has taught you. As you're pressing the trigger, the man sees you have a gun, so he stops and drops the knife, but you don't see that because your hands are up in front of your eyes and in the way as you're pressing the trigger. Several people witness you shooting an unarmed man. What happens next will vary by state and responding officer, but your life will never be the same.
Choice 2: you draw your pistol and keeping your hands in a position where you can clearly see the assailant's torso and hands, you place the laser dot center mass. The man sees you have a gun (may even see the laser), so he stops and drops the knife (just like in Choice 1), but this time you can clearly see him drop the knife because you're looking directly at him the whole time (what most people would do instinctively anyway). Now you don't need to shoot him, and you've saved yourself a lot of legal hassle/bills.
I'm not saying that lasers are always the answer. Being proficient with iron sights is a must, but I'll take Choice 2 over Choice 1 any day.