Why do gay men have a fascination with divas, actresses, Bette Davis, Madonna, and the like? Is it because they want to be them? Anon.
First of all, whenever you talk about gay men, the word "some" should always be used as a prefix. Some gay men may have a fascination with certain, as you call them, divas or movie stars, but certainly not all or even most. These gay men tend to be the more flamboyant members of the community.
Second, Gay men are men; they have no desire to be women. You're confusing homosexuals with transsexuals, or at least you're confusing the average gay man with a drag queen (or gay transvestite). Most gay men are not drag queens and have no interest in dressing up or posing as a member of the opposite sex. There are drag queens (as well as heterosexual transvestites or female impersonators) who dress up as famous women either as part of their act if they're entertainers, or as a homage to someone they are a fan of.
Lastly, both Madonna and Bette Davis have heterosexual fans.
There are many, many gay men who not only have no fascination with divas, but -- believe it or not -- no particular interest in any aspect of show biz. There are gay men who like sports, camping, back-packing, computers, hardware, electronics, hunting etc. etc.
Let's get past the stereotypes. We are a very diverse bunch of fellows.