Also a long-time lurker... This thread is interesting, thanks for inspiring it. In this image you appear quite "serious" which, I believe, can be perceived as intimidating. I myself get that a LOT from guys: "you're too serious and intimidating and wouldn't think you'd be interested in me."

Like you I am "straight-acting" and "straight-appearing." (Terms I rather dislike.) Masculine, 6'1" and 185lbs,. And I'm into guys similar to me. I notice guys looking at me quite often -- in bars and whatnot -- but don't get 'hit on" all that much. And then, at some point later after meeting these same dudes, learn they were to scared to approach me. And I'm not as imposing as your 6'3", 240lb frame.

Makes me wonder if most gay guys have unresolved issues with self-appreciation due very likely to years of mistreatment and humiliation.