It isn't a question of respect, it is perspective. It has nothing at all to do with being a skeptic. Based on definition, you cannot deny that there are UFO's.   If YOU have the unusual experience first, then as I stated above - you are more inclined to determine the cause - in which case YOU accept what is the most probable explanation that YOU can accept. You are no longer a disinterested party if you had the experience.

A UFO is simply UNIDENTIFIED flying object. I am not doubting that people have seen something they cannot identify. That is not an acknowledgement that the object is from another galaxy far, far away. It can very simply be a natural phenomenon or an object of earthly origin.   UFO's are real, but they are not necessarily from another planet.