Okay, any Star Trek fan knows that Gene Roddenberry invented the transporters so he wouldn’t have to deal with the special effects necessary to show a landing every time the crew visited a planet. It also cut out any time needed to show the launch, travel time or landing, and that moves the story along. Both of those are smart and good, so let me start by saying, “Gene, that was awesome! And so is the horse you rode in on!”
There’s also the simple fact that, in science fiction, you have to grant a few “gimmes” in order to tell the story you want.
The canonical example here is warp drive. Do you want to explore strange new worlds, and seek out new life and new civilizations? Well, you’re gonna have to find a way around Mr. Einstein, who laid down the Universal Speed Limit, a little thing we like to call c.