Tis a sexual orientation.People are gay because they are born gay.Epigenetic it give some explanation why people are gay.Gay and hetero people have same genes but some of them are not expressed to gay men.This can explain why identical twin can have different sexuall preferences.
Satisfaction.
The same reason why there are heterosexual people.
Same reason straight people do.
No, most of them are not abused as children, myself included.
The main reason is most likely relious-based bigotry.
Since gay people exist, they should definitely be tolerated. There is no reason for intolerance toward people just because of their nature.
There is no reason why gay males and lesbians should not be allowed.
For the exact same reason that all people dance.
For the same reason heterosexuals intend to have heterosexual relationships.
The same reason some straight people are cute. They are born that way.
No not exactly people smile all the time for any reason. It dosent mean their gay! Maybe just happy.
There is no valid reason why a person's sexual orientation has anything to do with holding political office. Gay people are just as capable as anyone else.