If you still don't get it then you probably also don't get why people run vintage/classic cars (why bother when - to paraphrase - you can get the same things as running a modern compact saloon as well - both get you from A to B, the modern compact probably more reliably so) or operate steam engines or collect stamps.
In my home office I have a fully working refurbished GPO model 746 rotary dial telephone [0][1], I use it all the time if I'm sitting at my desk. Sure I have a DECT and VOIP handsets that do many more and very clever things but I enjoy using that old phone. I like "dialing" numbers on the rotary dialer, I like the sound of its ring, I like the clunk as I replace the handset, I like the faint click it makes when you lift the handset. It's also ergonomically better than most modern phones because the handset part fits better around my neck and chin so I can talk away and have both hands on my keyboard.
I'm mostly a functionalist (to quote coldtea) but there are little things in life I enjoy for their aesthetic (as I perceive it) and nostalgic pleasures, in particular electronics and audio kit from the 70's (I was born in the late 60's :) )
[0]: https://en.wikipedia.org/wiki/GPO_telephones#Type_746
[1]: https://en.wikipedia.org/wiki/GPO_telephones#/media/File:GPO...