These labels put you in neat boxes. Historically it has had its advantages. In a highly prejudiced society these labels help you fight for visibility, rights etc. But beyond that I think the hetero/gay/bi categories are pretty useless and I wish they will not last for too long. I hope we will soon reach a state of maturity and openness where they won't be needed anymore. The alternative is that the categories (which on the scheme of things are rather new) become so fixed and institutionalised that they lead to increasing social pressure to act like this or that, breeding new conventions, new prejudices etc.