Tonya said
First of all don't try to convince a Scorpio of anything because sometimes they just love to yank a person's chain. I once had a Scorpio argue me up and down that he was not intense and I just told him that the fact of him arguing me so vehemently PROVED his intensity.

Some Scorpios will scoff at Astrology or anything else that might give information about themself that they want kept private. So, there could be a number of reasons they refuse to believe it.

Don't worry yourself about who believes you, just do your own thing and if others don't like it, oh well, tough for them.  

I am a scorpio and not intense. (ducks)

Its such a shame that people dismiss Astrology as baloney. I think they've never seriously studied it and have seen first hand how it helps them. If they get their chart done, they'll realize Astrology is the real deal. Astrology offers some real answers and solutions to problems. Its real self help.