Someone out there might think some of them are worth digitizing. Are these just old movies in standard boxes or are these taped copies? If there are any recordings of TV broadcasts, they may absolutely be worth saving. We only have access to some recordings of popular shows now because someone recorded the show once upon a time. TV studios didn't always archive and preserve broadcast shows because tape was expensive and no one in authority at the time thought they had any value to the future. The most notable example of this is Dr. Who. But, even mundane recordings of news broadcasts, shows, and commercials can have value to some. There are still some movies and things that never saw a later release on DVD or their original masters have been lost. You should catalog what you have and ask around the data hoarder communities, there may be someone willing to pay you to ship them select tapes.