Concerning my experiencees on film-use I only can refer to this again:

Concerning records (vinyls): I spoke with a lot of 2nd hand dealers and aside from shops in hip-cities they only have a very, very limited number of clients in their twenties.

Concerning audio cassettes: two years ago I came across a cassette project at an art show.

Concerning VHS: I have not even heard of someone else using a VHS-camera.