Finding some old negatives on flea market - and then developing them and looking those pictures is time traveling for me, I enjoy it very much. So when you (we, I) are gone - our negatives go to family, and they can even sell them or give them to someone - but they will find a way to some future analog enthusiast in 100 years from now and he/she will develop your picture and have his/her time travel
One of best characteristics of analog photography is long archival life.