I only do so for the sake of having it in different formats.
Maybe an "audiophile" can "say" there is a difference but the real honest difference to me is that vinyl will give you the sound of how it was truly recorded to sound like from the recording studio while other forms will have the sound "cleaned up" and it will not sound "flat" for a lack of better terms.
I have AC/DC on vinly and it will sound different than streaming for instance but it is not a bad or good thing to be honest.
It really comes down to prefrence.
Kind of like the debate of why would we collect physical copies of retro games when we can just emulate type of argument.