Would you use teleporter technology if it existed? Why or Why not?
You know those sci-fi teleporters like in Star Trek where you disappear from one location then instantaneously reappear in another location? Do you trust that they are safe to use?
If it existed, was proven safe, and was widely available enough for anyone to use, then of course.
The auto and airline industries would collapse, reducing pollution and global warming.
The biggest downside I can think of offhand is that everyone could vacation wherever they like, and that would quickly overcrowd and ruin all the nice places.
What if it's "proven safe" in the same way that surgery under general anaesthetic is safe - nobody remembers feeling pain. Nobody (mostly) reports pain after waking up. But what if it's torture and you just don't remember it afterwards.
Teleporter is kinda the same, but no one coming out of the other end remembers dying because in their memory they didn't.
People would also be able to commute to their jobs from any distance, which would probably cause people to spread out instead of all gathering in big cities.