Classic vs new what has happened to television programming?

every station you turn now most of the oldies like andy griffith, i love lucy, dark shadows, hee haw, buffy the vampire slayer, married with children, sanford and son, dukes of hazzard, and happy days have been replaced by new stuff focusing on younger generations , even though i will admit some new shows are good , but im 19 and i still love the old shows do any of yall agree television is focusing too much on the younger generation