Why are most strait ppl against LGBT?? honest answers, i would like to try and understand.?

i have recently discovered i am bi, and am fine with my decision. i am 14.
but why do some ppl not like the LGBT? it seems perfectly harmles to me. what do you find so wrong and repusive?
i would like some honest answers to try and understand this hate.
)x

thx pplz
xxx
14 answers 14