This is not the first thread I have read lately on what the family should do with a great stereo rig and music collection when the owner is gone. Two thoughts come to mind.
1. Find someone in your family you can get interested in your system. For most, it is a lack of understanding. As music is a lifelong journey, is their no one that can be started on the path?
2. Sell it off yourself and get a modest system for your final years. Then give the money to your heirs while you can still watch them enjoy it. That could bring more joy then the system?
IMHO