The faster you get down, the more runs in a day. The more runs in a day, the more money you make. Turbines don't suffer shock cooling and the prop acts like a brake, so why not?
Descent rate depends a lot on the aircraft and its Va. Most light GA aircraft need 700 fpm for a 3 deg approach profile. I use 500 fpm for economy and ATC seem to think I can easily do 2000 fpm. Certainly, its common for ATC to leave me with a TOD that requires 1000 - 1500 fpm or greater to get down to circuit height.