I like the Kinsey Scale because it is simple - it's easy to understand and to explain to others. While I agree that it is an over simplification, I also think it helps illustrate to others (read 'clueless straight people') that sexual orientation is not a binary state where you are either gay or straight - it is a continuum with infinite degrees.
Personally, I put myself at about a 5 - I think I must have, at least, some heterosexual attraction in order to stay married. I mean, I'm not totally repulsed by my wife. Although, the online tests I've taken for Kinsey score tend to put me more at a 3 or 4 - because they focus on action rather than attraction.
For me, the Kinsey scale also helps to explain why there is so much disagreement on the proportion of the population that is gay. I've heard estimates ranging from less than 1% to 10% or greater - I think they are all correct - it depends upon the definition of 'gay'. If you're only looking at '6' on the Kinsey scale (totally gay) then 1% or less may be correct. If you're looking at 4 or greater (mostly gay) then 3%-4% might be a good figure. If you're looking at anything greater than zero (anybody who has any gay feelings whatsoever) then 10% or greater might be accurate.
But, I don't think we'll ever truly know how much of the population is gay
- sexual orientation is largely misunderstood by the masses
- it's too politicized
- I think human nature would cause many people who are a 1 or 2 to have difficulty admitting it (how many straight guys will admit to being 'a little gay'?)
What I find interesting is that the people who insist that the gay population is smaller than most believe are also the same people who feel most threatened by the gay population. How can a 1% minority be such a threat to a 99% majority? For that matter, how can a 10% minority be such a threat to a 90% majority?
Here are the final results from my Kinsey scale poll. I find the results of this poll interesting. The distribution on the gay side of the scale is about what I would have expected. But, I am surprised at the number of straight (or mostly straight) people who read my blog.