Firstly there are no labels like gay, lesbian or bisexual in Islam. Who we have sex with or who we find sexually attractive is not made a matter of identity.
Secondly Islam does not condemn anyone because of their feelings. If a male finds other males attractive then that in itself is not sinful because he has no control over those feelings, but what is sinful is to consumate those feelings (i.e. have sex with another male).
People with homosexual feelings should be counselled and supported, condeming them for their feelings is not Islamic, Islam teaches us to hate the illness not the ill.
The Islamic option for a male with sexual inclinations towards other males would be to live a celibate life if he is only attracted to fellow males (untill/if he is cured), or to marry a woman if he is attracted to both males and females.
This life is a test and different people are tested differently, some with illness, some with poverty, some with a disability etc.
We're humans not animals and that is why God has given us the intellect to judge between right and wrong and moral and immoral... We were not created for hedonism, we have to follow a set of rules to be succesful in the hereafter, this life is only temporary but the life to come is eternal...
Some people are born with psychopathic tendencies to murder but that doesn't make it right for them to murder....
...Other people are incestuals, paedophiles, beastialists, nacropheiliacs and they say they have no control over their feelings but that doesn't mean it would be morally right for them to act upon their feelings.
Having said all that a Muslim who does engage in homosexual sex does not become a Kafir (Non-Muslim), rather they become a sinner, they might be sinful but they are still Muslim just like the sinful Muslims who commit heterosexual fornication or drink alcohol...
...If however somebody declares homosexual sex to be Halaal then they have indeed become Kaafir, regardless of whether they themselves engage in that sin or not and that applies to any sin because declaring the Haraam to be Halaal and vice versa annuls ones Islam.
Homosexual sex is forbidden in most major world religions including Judaism, Christianity and Islam. Even the eastern religions such as Buddhism, Sikhism and Hinduism consider it sexual misconduct.
very well said .... we should try to help and support them not insult.