Please don't take this the wrong way but tell you. Satan likes nothing more to see the children of God be hurt. Satan takes delight in that simple fact. I'm very sorry you had to go through all that but everyone goes through hard times. Not the same situation but here's a bit about my past (sorry I've written this a million times):
Around 7-8th grade I started to loose my hair. I have someone called Alopecia-- you immune system attacks your hair follicle are attacked by the immune system. My hair would fall out then grow back. And when it grew back more fell out in it's place. Most of my life I was the center of jokes and continually made fun of. People always talked behind my back (I could alway hear) and people joked about me having cancer. It wasn't until recently my hair grew back and has stayed for more than 6months. Do you think I wanted to give up? All the time! Did I, no. Why, because out of all that hatred and mockery Irecieved I knew I had a few who cared for me: God, family and a few friends (few). I can easily look back at all the bad and have tons to be depressed about. So many others could too.. But why? It's our past. Through Christ things are made anew. He will only forgive your past if your are willing to let it go.
Many other people face hard times too, not only you or me. People with cronic illness, deformities, mental retardation, abusive parents, being poor etc... You are lucky to have what you do. Now don't get me wrong, I'm not trying to play a guilt game here, but instead of concentrating on all the bad why not try focusing it on the good. Your health, your life, this world etc...
It's like someone complaining after winning the lottery, "yeah that's great and all but they taxed the heck out of my winnings."
It's always easy to find a negative. Try being positive.You are never alone and regardless of what hatred you recieve that doesn't change the fact that God cares deeply for you and so do others. Because a church says says your an outcast doesn't mean you have to buy into it. You are what you buy into. The adittudes we carry effect our daily lives. If you are always negative your day will always seem bad. If you try and be positive, your day will be more delightful.
I'm not sure what you want. People to accept you? Well I accept you as you. I disagree w/ the lifestyle but that doesn't mean your a lost cause. God has made place in heaven for many: ex-murderes, ex-homosexulas, ex-whatever. You have a free will and with that you can either give up or fight. If you give up, Satan wins. Your 15yrs and still young. Why give up on life so young? Life has more to offer but you have to give it a chance.
Think what you want, but Jesus does care for you and it would be a shame to turn your back on that. Giving up is only the easy way out. Everything worth while in life is worth fighting more. Things arn't always handed to you on a silver plater, it's sad but it's the truth. Some people are dealt a pretty crappy hand, but if you give up Satan wins. LIke I've said, it's easy to be focused on the bad, why not try looking at the good.
I dont know what you want from me, if your wanting sympathy or empathy, I don't mind giving it. But I dont think it's right to give it if the person has already given up. If you come in w/ the mind-set saying:
If you want to say anything to me, you can, but I'm not sure if it will help at this point...
then there is nothing we can really do. You have to be willing to open up and and stay for the long fight. Jesus is alway there to help. I've stated it a million times, but Jesus wants to work in the hearts of those who are willing to fight and trust in the lord. He won't force you.
Sorry if I sould a bit cold, that is not my intent at all. I'm just saying there is no reason to throw in the towel and give up on life. Life has a lot to offer you if you give it a chance. Don't let a few christians define the us "christians" as a whole like that. The majority of us are caring individuals that care for your well being.
But how can somone try to help if you yourself don't care anyone? Continue to have faith and smile even when you don't feel like it. Remain positive and more good will be able to be done.
I will continue to pray for you.