Since the scenarios are often set in the future, it might be contended that it's because surgery and technology are so advanced that no one is bound to a wheelchair anymore. Except that like so many other anachronistic affairs exhibited in such, wheelchairs eventually make their debut, as with Christopher Pike and Davros (as almost comic-like examples during a retro era of really bad FX and poor quality of both science and character realism in television fiction.)
https://io9.gizmodo.com/staircases-in-sp...1827966642
EXCERPT: . . . So why the hell are there so many staircases in space? I never used to notice stairs. They were simply a way for me to get from one place to another. Occasionally they were tiresome, but they never actually stymied or stopped me entirely. Eventually, I managed to get where I needed to go.
Then I started using a wheelchair. Suddenly, stairs became a barrier that prevented me from getting from here to there. One step was often enough to stop me in my tracks. It turns out that when you start using a wheelchair, you quickly realize that there are a lot of staircases and steps in our world—and a lot of broken (or nonexistent) elevators and ramps.
“If we don’t see ourselves in the writing, then it’s not inviting to us.”
Once you start realizing how many stairs there are stopping you in real life, it becomes impossible not to notice them existing in the sci-fi you adore. Turns out they’re everywhere, in all of our sci-fi. Whether it’s decades-old or shiny and brand-new, our sci-fi imitates a real-world reliance on steps and stairs in our architecture....
MORE: https://io9.gizmodo.com/staircases-in-sp...1827966642
https://io9.gizmodo.com/staircases-in-sp...1827966642
EXCERPT: . . . So why the hell are there so many staircases in space? I never used to notice stairs. They were simply a way for me to get from one place to another. Occasionally they were tiresome, but they never actually stymied or stopped me entirely. Eventually, I managed to get where I needed to go.
Then I started using a wheelchair. Suddenly, stairs became a barrier that prevented me from getting from here to there. One step was often enough to stop me in my tracks. It turns out that when you start using a wheelchair, you quickly realize that there are a lot of staircases and steps in our world—and a lot of broken (or nonexistent) elevators and ramps.
“If we don’t see ourselves in the writing, then it’s not inviting to us.”
Once you start realizing how many stairs there are stopping you in real life, it becomes impossible not to notice them existing in the sci-fi you adore. Turns out they’re everywhere, in all of our sci-fi. Whether it’s decades-old or shiny and brand-new, our sci-fi imitates a real-world reliance on steps and stairs in our architecture....
MORE: https://io9.gizmodo.com/staircases-in-sp...1827966642