For those who think it's pointless, how about these points :

1) It helps to increase your focus, knowing that your finger could easily be slashed off if you're not paying great attention!

2) It helps you lose weight with those 6 steps you're forced to take whenever you open and close the door

Wow, you managed to make a door which is less secure, breaks easier and is more expensive and harder to use than a normal door. Great job

I can’t believe how many people are saying this is pointless! What’s the saying again? Made before it’s time? I’ll see you all in 20 years when at least one of these space magic doors is in every house