Cops carry glocks for the same reason they drive Ford Explorers -- it's what the department issues. Many, many cops don't care about guns, don't shoot guns other than to qualify to carry it, and know fuck all about them. They strap on the issued gun and climb in the issued squad. That said, I still recommend a Glock, for the same reason that I recommend a Toyota Camry for a 16 year old getting their drivers license. It's the most common car in the country, it's reliable, and if you manage to fuck it up there are plenty of replacement parts and people who know how to work on them. Is it sexy? Nope. Is is the fastest thing out there? Nope. Is is a sold, dependable choice for starting out? Absolutely. A Glock 17 is the Toyota Camry of guns. (The Glock 19 is the Corolla.) Oh, and just like the Toyotas, buying a used 20 year old model for cheaper is a good idea. Guns can wear out, but it takes a long, LONG time, and the wear parts are easily replaced (usually springs and very rarely barrels.)