I went through the same internal debate when I acquired my first Luger last November; main reason for buying it was to shoot. (and because I was fascinated and couldn't pass it up) It turns out to be a collector, so I've decided NOT to shoot it, for all the reasons mentioned above.
Instead (since I love to shoot) I ended up buying a nice non-collectible Luger (all matching but refinished 1918 DWM) also from a forum member. I still have yet to actually shoot this gun, still have 4 months to wait (Dutch law).
It may cost a little more (maybe), to look for a separate shooter, but in the end, I see the collector more as an investment piece and a beautiful piece of engineering, and I can shoot all I want with a quality shooter. Until I can actually bring my shooter Luger home, I have a good P38 (ac43) to bring to the range (no it's not a collector, and it shoots very well)
Maybe I should collect shooters!!
What I DON'T want is to mess up a higher priced all matching original collector. As one person on this forum said, "They just ain't makin' these no mo...."