I cant really say that I have had that experience, but perhaps I "ooze" trust or something through the intarweb .
I do know what you mean though, but perhaps that is the same as when people talk about skydiving and when somebody wants them to join for a skydive (or bungejump or whatever) they back out.
Lots of people have wants and needs that they "want" but might be too scared to actually take the "plunge". It is always safer to talk about doing something than to actually do it if you know what I mean.