^^^Signature line worthy.
Not that anyone should listen to me, but, I have a strategy with regard to curating my collection, and it centers around caliber consolidation. I like to be able to shoot whatever I own that isn't absolutely ancient. I therefore tend towards 9mm and .38/357 for most acquisitions of late (despite constant freedom boner uprisings over things like the new GP in .44spec).
So far as platform, I totally see both camps. Was it Ben Franklin who said "an educated man knows everything about something, and something about everything?" I think maybe Surf here came closest to expousing this approach the last time the conversation came up with comments about majority practice being on carry platform, but cultivating the ability to run anything.
I have purposely bought and flipped exemplars of every common handgun system (even taking one class with a PPK clone a while back) just to have a working knowledge of striker, 1911, DAO, DA/SA... I even have a toggle action.
But most of my range time is split between Gaston Bricks and elegant wheelies. OMMV, and you can take that to the bank: I'm no TLG on any platform yet. Grain of salt...