You never told me when I turned to the dark side this would become obsessive.
Fortunately, I've been able to resist despite the cookies. I sold my G34, I couldn't shoot it worth beans, and only have the G17. Primarily I own it so I can shoot GSSF. I've discovered that to do good in their competition I only need to shoot one gun. Shooting multiple platforms messes me up. I've scored higher since I sold the G34. So unless I achieve Master status (unlikely) I'll just keep shooting the one G17. I thought about buying an extra for backup at a match. But Glock will repair any breakdown for free at the match and GSSF will let you "do over" for gun malfunction, so there's no need.
I get it that a 10mm gives you both capacity and power in one package, I just never got turned on to it. When I get that need-for-power, I just take out my .44 Mag these days.