Sometimes I carry something lighter, more compact, but for over 20 years now I've used this 45 1911 Kimber. It's got 85,000+ rounds through it. Still shoots pretty well. Used it on SWAT, Patrol, Detectives, while I was in a gang unit, and for my own personal off-duty carry. I still carry it most days, now that I'm retired.
Are there good, modern guns available? Of course! I'm just kind of fond of the 1911's after several decades of carrying them. Life just wouldn't feel as good without having one handy.