Not if they know it's a sin.
And if you want to go that "natural" route, let's bring up NAMBLA, shall we?
If you want to justify homosexuality with science, then let's see you justify NAMBLA with the same science.
Let's see the things you chose:
Did you choose to be born? No.
Did you choose to be male? No.
Did you choose to be made of chemicals in a universe made up the way our's is made up? No.
Did you choose to be born into Western society? No.
Did you choose to be attracted to the sex you are attracted to? No.
Did you choose the chemicals that lead to sexual arousal? No.
Did you choose to be brought up in the manner you were brought up? No.
Did you choose to have been born in the 20th Century AD? No.
Did you choose the language you were taught to speak? No.
Did you choose to have been growing up in a predominantly Christian society? No.
Did you choose to be educated in state schools towards capitalist fiat-currency ownership? No.
Did you choose to have the colour hair you had? No.
Did you choose the colour eyes you have? No.
Did you choose the genetic disposition to height you have? No.
Did you choose to be a member of the human species? No.
Did you choose to have ten fingers and toes? No.
Did you choose to have complex eye structures? No.
Did you choose to have five sense, rather than for instance, three, like a worm? No.
Did you choose to be bound into momentary conscious experience as is the nature of spacetime and observation of it? No.
You chose literally nothing but what choices were presented to you within a bigger picture that you chose no part of, and even the choices you do make are choices arisen through a set of circumstances that are most broadly completely out of your control.
You did not freely choose the visual, tactile, or aural objects that make up your memories, your surroundings or your circumstances and mental conditioning. You did not freely choose a vast number of the momentary experiences that shaped your life. You did not choose for people to die, for consciousness to be arisen, nor for life to be mortal.
What you see as ''choice'' or ''free will'' and ''character'' are actually labels you ascribe to interdependent circumstances vastly out of your immediate control resulting in certain beliefs you hold.
If you had been born in Saudi Arabia, you'd probably be black haired, brown eyed, Muslim, home-schooled and speaking Arabic. Our lives contain an element of choice, but the circumstances surrounding our perception of the world in regards to the place, time, date, objects, memories that make up our perspectives of the world are ultimately out of our control.
What you believe is ''free will'' is actually the ability to choose from several directions of motion, a choice ultimately culminating from past experiences of conditions and circumstances not chosen by you.
You're a Christian, most probably because you live in a predominantly Christian society. You're white (or black) because your parents where most white (or black). You're straight because chemically, your body responds to certain sexual stimuli (women). You're human because your parents were human. You're American because that's where your parents decided to conceive you. You're born in the twentieth century AD because that's when your parents met one another and had you. You're constricted by momentary conscious experience because that's how observation of spacetime from specific points works. You're educated to Western standards because you were born into a Western world through no conscious choice of yours. You relate certain things to other things because those other things happened to be the tactile, aural, visual and sensory circumstances that contribute to your retained knowledge of the world.
Choice is a nice word that we use to allow ourselves to think we have it, but really, most of what you are was completely out of your control. Perhaps that scares you? It makes me think, perhaps, that we're exactly what we're supposed to be, otherwise we'd be something else entirely. In that, there's no room for elitism. You're at the mercy of circumstances and time just as much as the rest of us.