The Voyage (to the old folks) Home.
I mean let's face it, they were
all beginning to get a bit long in the tooth for all this space adventure stuff by that stage.
Well, for older men and women, they did quite well. IV was a critical and popular success, marking what many would consider the dawn of the second golden age in Trek. It inspired Paramount to green light Star Trek: The Next Generation and crossed over into pop culture and appealed to non fans like no Trek film had done before.