Shake,
I know what you mean -- I've bought a bucket load of HKs myself! But I still have this love/hate thing with HK's US distributor in Sterling for not making all the goodies available to us Joe Citizens. Thanks to Larry Gaglio at CCF and a few others, we are able to get some items on the gray goods market. But the prices for HK products are horrendous. And let's face it, mystique only goes so far. There are a lot of suckers out there -- and I'm one of them!
I like the Glocks as well and usually prefer them for CCW because -- like the USP -- they are so tough and reliable. Where the HK has "mystique," the Glock is relatively cheap and has other factors going for it -- like the availablity of hi-cap mags, factory and aftermarket parts and Glock armorers (not that you usually need one). The Glock is more simple to maintain and faster to get into action with its lack of trigger transition and fast trigger reset.
Not to take away from the HK, which are fine pistols as I can attest to. But, unfortunately, HK's civilian marketing approach makes Glock an easier choice for someone who wants a good carry pistol, and/or is on a budget, and/or wants more accessable and affordable customization.