I think the real problem is that those three terms: gay, straight and bisexual require you to choose a side: you're either only sexually attracted to men or women, or are equally attracted to both genders. Nothing in-between, since then, as you suggested, those people should be put into the "questioning" category which means they are simply undecided/unsure - something that I feel is a really harmful concept. And given how bisexuals are pestered by both straight and gays (something that I find really weird - we're already a minority that has to deal with bigotry, we should know better not to oppress a minority within our group), it's easy to see why many feel the need to chose a side and stick to it no matter what.
That's why I prefer the Kinsey scale - it feels much more natural since it's more fluid and gives you more options. It doesn't force you to declare either "I love dicks" or "I love both dicks and vags", it also allows you to say: "Generally I love dicks, but there are few vags that do attract me".
True, but unrealistic to expect the gay pride marches to walk in groups of Kinsey ranges. Also, I personally don't feel that the label 'gay' prohibits me from being more flexible than the term would literally allow for.
'Straight' seems a different story, and 'bisexual' is used for everything other than 1000% straight, so I guess it's just like the game review scales where 8 means bad and 0-5 don't exist. It's all screwed up really, but if we say bisexual covers
everything between the extremes, we would almost all have to subscribe to the bisexual label. I mean, it explains the high figure for bisexuality and it obviously explains why many people feel a lot more comfortable 'hiding' behind the super-ambiguousness the term offers. But honestly, it also helps to explain the hostility and offendedness of those who're totally pro-labels (by which I mean binary gay/straight) and feel comfortable with that choice of identification.
Furthermore, the sheer insanity of trying to emulate the Kinsey scale with a plethora of labels instead feels so hollow in consideration that I'm almost wondering why this very thread title promotes using labels.
I mean, labels exist for basic orientation, it totally gives you a rough idea of what is meant, that's a valid function.
But, honestly, I myself feel a bit silly now for saying I'm gay because if 'bisexual' is used as a Joker and a 'catch all', I feel left out of all the options that apparently come with the magical 'bisexuality' label and I feel invited to think that the sheer mass identifying as bisexual looks down upon those who seem to not believe in their own flexibility and Kinsey-scaleness. I believe in the Kinsey-scale, so logically I should add myself to the bisexuals. But we can't possibly all be bisexuals, that would be the peak of labeling-insanity.
I don't know, but at least I guess I get now how it's possible for a minority group to shame others within. They think 'bisexuals' take the easy way out. Which is true, actually. But (to refer to the shoutings of that angry insecure woman) it's certainly not true of those who march the designated bisexual-group at Gay Pride because nobody would do that who's not actually attracted to both sexes. (Which -full disclaimer- has not much to do with all of my ramblings about labels here, people who're attracted to both are as welcome as every other Kinsey-number ever, but yeah I admit to feeling that they deserve the label more than others, and this inevitably leads to the idea of 'privilege' coming up and feelings being hurt and well... it leads to people being unhappy because of labels. But yeah, when was that not true?)
Edit: Plus, you're right with Questioning. It seems to imply that sooner or later you have to take sides other than Q, because Q cannot be a permanent state. (I always interpreted it as 'undecided' in the sense of 'at the moment I refuse to decide/categorize myself with inadequate labels, but I see how this can be easily interpreted less friendly. Still, even the Q is in our title.
But anyway, to conclude: I personally don't have much of a problem with labels, but I see how it leads to conflicts like that)