This issue has hit close to home for me and has encouraged me to ponder this very question very deliberately. My own observations (which, admittedly, lack a full perspective) suggest that true Christians who ask this question already know the answer- although it seems to be a very tough answer indeed. I no longer believe that those with same-sex attraction (SSA) necessarily "choose" it. We are, after all, conceived in sin and all is not yet according to God's original design. Yet it is difficult to dismiss passages such as Romans 1 and 1 Corinthians 6:9-11. "So were some of you..."
I am glad you are able to express your frustration regarding the expectation of resisting the appetites that you feel from the core of your being. So many Christian teachers do damage by saying that homosexuals are to turn to Christ, be healed, and then embrace a healthy, vibrant heterosexual marriage. That seems to be a very "Pollyanna" way of viewing the issue and not one often grounded in reality. I have had verses such as 1 Corinthians 7:9 pointed out to me: "But if they do not have self-control, let them marry; for it is better to marry than to burn with passion." People with SSA don't seem to have the outlet married heterosexuals do. If many heterosexual Christians cannot handle this "passion" if they remain single, is it fair to expect those with SSA to pull it off?
The only answer I can think of is to lean on God's understanding and not our own. Hold tight to God's promise in 1 Corinthians 10:13, walk in the power of the Spirit (John 14:15-16), and set your mind on God (Colossians 3:2). Nothing can compromise His love for you, yet He loves you too much to give you peace if He is convicting you of life choices that are contrary to His Word. I personally believe that on that great and glorious day there will be many brothers and sisters who have successfully fought SSA who will receive far more crowns to lay at His feet than people like me. Whatever you sacrifice for His sake in this life He will pay back with infinite interest in the eternal life to come. Please don't become too focused on the here and now. God will bless you beyond your wildest imagination if you choose to live for Him now, even if the price right now seems very high.
Harvester77, I am praying for you right now and my heart breaks for you. Please don't ever let the enemy separate you from the Body of Christ. We love you unconditionally and want God's best for you!
Un abrazo grande,
Santiago