It is not what you need, it is what you want.
My most prized gun is a Luger P-08 (# matching) that my wife surprised me for my 50th B'day. I don't shoot it very often.
It doesn't really have a purpose in my "collection" (arsenal ???) not a good SD gun, not very accurate, a PITA to clean, but I really enjoy having it.
Did I need it, hell no !
Did I want it, for sure ! For the last 35 years !!!
It was expensive at the time and I had always pushed it to "better times".