gay or straight

I am either getting rather outdated or am just sane in a mad world.The newspapers are full of murder,rape gay marriages and such news.I am not sure what the purpose of this news is.Does it change society?.No if at all it gives every pervert and murderer a chance at his or her 16 minutes of fame.Do we stem crime?,no we just glamorise it for the sake of readership and viewership.
Take the instance of gay marriages.All newspapers in my city thought it was news,perhaps it is,but looking at the photograph i was a little surprised.There seemed to be a man and a woman(man dressed in drag) and i am puzzled.I am under the mistaken notion that gay and lesbian marriages happen because men are in love with men and women with women.If that is so why do they need to have a man and woman role in this relationship.Why not just remain same sex and be happy.If i were in love with a woman I am sure i would want her to remain a woman instead of taking on a male role.The very fact that gays and lesbians need to follow opposite roles,tells me that there is an underlying need for opposite roles so can this whole debate on gay and lesbian tendencies be right.Call me conservative but honestly if I needed a male and female role in a relationship to feel normal them why not just stay straight.
Confused i may sound but I still believe that a heterosexual relationship is far more natural and instinctive and all this war on gay rights is just a section of petulant people wanting some attention and sorry i have no sympathy for them.
Ps.I actually have over the top gay friends whom i like but i like them as people and not for their sexual preferences.