> But the most important reason for me to buy records is to one day allow my daughter to discover this strange music from more than half a century ago that was always playing in the house when she was still young. Good luck trying to convince a teenager to have a listen at your Spotify playlist ;)
Sorry to be a spoilsport, but chances are she'll never care, and that your expectation that she'll come to appreciate your musical tastes and your collection will be a burden to her more than anything else.
She'll have her own life and her own tastes. Shared interests are great if they develop naturally, but they cannot be forced, and substantial collections very often end up only making the children feel guilty about disposing of them.