If I have to be honest, building a dimension door would be very beneficial of sending supplies with no issues.
But if we try a person or any creature for testing, will we be able to pass through without problem.
Won't we not accidentally fall to another dimension or worse get stuck there?
Will we suffer from radiation after passing through if this dimension doors runs by atomic/ nuclear energy?
Even letting it run by fuel is considered harmful.
Such a thing can be possible but also dangerous.