If I wake up in the low light, without my glasses to see the sights.........hell yes, I 'm glad I have a laser!
If I'm knocked to the ground, and have to try to defend myself from that position.......hell yes, I 'm glad I have a laser!
If I have multiple attackers, and I have to move quickly from target to target............hell yes, I 'm glad I have a laser!
I can think of no 'down side' to having a laser!!!!
Just one man's humble opinion.
Now, there are some, maybe just one, who would say that with proper training you should be able to point shoot even in those conditions. As for me, I'm glad I have lasers on all of my SD pistols. I target shoot with my sights, but my laser is also set to where my pistol shoots because you never know when you might need it; and it's better to have it and not need it than to need it and not have it. Just remember to stay up on your batteries. CrimsonTrace will give you one new battery per unit each year, but I keep spares on hand anyway. The thing to remember is that a laser sight is just one more tool you have available to you. On three of my SD pistols I also have night sights, and on my LCP I have applied luminous nail polish because it doesn't have night sights, but in low light I would probably just use my laser. The key is practice, practice, practice.