By no means all LGB people feel as you do, though, so you don't feel like that because you are bisexual, but because you are you (which is fine, but it is important to recognise the difference).
Also, you are not the only person on these threads who is LGB, the law of averages shows that there will be others. As with all groups of people, those with gay sexualities do not think as one, and generally don't appreciate someone speaking as a mouthpiece for the whole group. The same is true for transpeople, who must be utterly fed up with well-meaning people who are not trans themselves speaking on their behalf.
You may have struggled with your sexuality, but please don't assume that others haven't had similar (or different) struggles of their own. It doesn't give you the right to assume a higher level of empathy than other people. You don't know the personal circumstances of others on these threads, or of their friends and families - the odds are high that none of us has experiences that make us different from everyone else.
I am not a messy person but...
Happy Birthday - 100 years on Earth
