Hmmm. When i read that, i immediately thought of social and cultural worlds, not personal worlds. My answers would differ.

For social and cultural worlds, i don't know if its a curse, but it is essential to be able to do this unless we just want to run around destroying whatever we don't understand.

For personal worlds, if someone wants to show me theirs, fine. Don't ask me to show you mine until you have been my good friend for a very long time. To be able to or to be unable not to intrude uninvited into someone else's personal world would definitely be a curse.