The popular 'Brady Bunch' TV series ran from 1969 to 1974 and was a beloved part of American culture. The show's end was due to a variety of factors, including a decline in ratings, the departure of key cast members, and a shift in the public's taste. The show's ratings began to slip in 1971, leading to the departure of several characters and a reduced budget. By 1974, the show had been cancelled due to a lack of interest from viewers and networks. The show's producers also felt that the show had become too formulaic and predictable, which further contributed to its demise. Ultimately, the 'Brady Bunch' TV series was a victim of changing tastes and trends in television.