You know, you can have beauty AND performance. Form and function are not tradeoffs. It's probably easier to find a vintage shotgun that will shoot well for you than an off the rack new gun.
Once I decided that hunting was the most important activity to me, I decided it was also where I was going to spend my money and energy to find the tools that that I enjoyed the most while doing it.
I also like to ride bicycles. And I ride them hard and I enjoy using them. But I am not as interested in them as I am in hunting, so I do not buy bicycles of the same quality that I buy firearms.
Therein lies the difference. How can I NOT hunt with the finest, most attractive kind of firearm I can afford??
And finally, fine firearms tend not to lose their value because they are used. Unlike the brand new truck, bike, or shotgun that rolls off the dealer's showroom floor, a new-to-you 19th century English shotgun may actually increase in value while you add a little patina to its surfaces. Albeit, I bust one once in a while.
And one more finally, fine firearms are not always expensive or at least as expensive as you may think.