I'm the opposite. In a self-defense situation I don't want to mess with a heavy, rough trigger. I want a smooth, consistent trigger that's not too heavy.
I don't really want a trigger that's so heavy it prevents AD because the way I see it, I keep my finger off of the trigger until I'm ready to shoot.
That said, I wouldn't want a trigger lighter than a Glock without a safety.
Then you obviously haven't tried pulling a Kahr trigger. Smooth and consistent are the first two words that come to mind with this gun. Half the reason people praise the Kahrs for accuracy is due to this amazing DAO trigger. It is the furthest thing from heavy and rough as you can get. In fact, I'd say it feels lighter and smoother than a Glock trigger. Of course, you can modify Glock triggers to be even lighter w/ a new connector, and they obviously have a shorter SA-type reset compared to the long DAO reset of a Kahr (better for quicker follow-up shots), but overall the Kahr trigger is smoother and better feeling out of the box. The actual shape and ergonomics of the Kahr trigger also blow away the Glocks. A modified Glock trigger pull performs great, but still feels like absolute crap on your finger...especially with that poorly designed trigger safety. At least Springfield Armory knew how to improve the trigger safety design with the XD. I've owned a G19 for plinking and a G27 for carry purposes, but sold them both because there are better options IMO. Still can't argue their reliability though..Glock is top notch along with Sig, CZ, etc.
If you prefer SA, I'd understand, but Kahr does offer a GREAT trigger pull for DAO. Best of both worlds IMO.... buttery smooth, long DAO trigger w/ a surprise break at the end = great accuracy.