It sucks every ounce of enjoyment out of your hobby, trust me on this.
I must (respectfully) disagree: From approximately 1987 until circa 2000, Iand a pal/business partner, both AVID collectors of "vintage" (mainly American-made) geetars and "vintage" American- and British-made amplifiers (and effects), started up a high-end vintage musical instruments business -- FT for him, sideline/hobbyist thing for me -- and I not only loved every effin' minute of it but came away, so many years later, with not merely an array, but
the array, of vintage geetars, amps, and effects I keep w/ me until this very day. Owned @ once as many as 500-600 geetars, couple hundred amps, & hundreds of effects boxes/rack-mounts/etc.; as I @ last pulled away from this "hobby as business", I emerged with 11 perfect electrics and four perfect acoustics, including two resophonics, both National-built, both Prewar, one single-coned, one tri-coned. And precisely the effects and amplifiers whose tone/shaping of tone I loved most.
I'd do it all over again and again and again. Same goes for a (still) very large LP (and 78) collection of ~ 5,000 items, the "leavings"after having "handled" ~20-30G during 40+ years of buying, selling, and trading old records.
A hobby for which one holds a passion and a business re: the same can exist together. I know guys (in The States, obviously not in The EU) who would say likewise re: Firearms Collecting (and buying, selling, and trading). And "vintage" cars, American-made "muscle cars" in particular.