IMHO, any firearm has some arguable practical use, even if I don't personally shoot Bullseye matches, hunt the 'Big Five', or imagine myself to be some sort of Mall Ninja SOCOM 'operator'.
That said, I have to admit to having a weakness for unusual machinery. Especially those which perform their designed tasks in novel ways or with particular panache. What constitutes 'elegance' in design is quite relative and most subjective, IMO.
I have a Winchester M52-C. I haven't shot a smallbore match since I was a Boy Scout.
I have a Marlin '95 G, even though I'd have to travel out-of-state to hunt with it, and have no interest in going to Alaska, Asia, Africa or anywhere else to kill something simply to be able to say that I did.
I have more than twenty different .22 RFs in assorted makes and action styles. Hard to rationalize in terms of 'need', but I like 'em.
I have a Garand, several Enfields, a K-31, a Mini-30, four SKSes, and an eclectic assortment of swords and edged weapons, even though my 'warrior' days are long-past and, hopefully, highly unlikely to return.
I have enough handguns to carry a different one every day for a month and more. Only three of them actually get much in the way of regular CCW use.
So, yeah I guess that you could say that I buy guns for which I don't have an immediate 'practical' rationale. My big problem is not having the funds to do more of it.