There may very well be some biological make ups that make homosexuality more enticing (tempting) to some just as someone's biological make up makes the thought of same sex repulsive. we are all created differently, some have more violent tendencies than others. Some are more masculine, some are more feminine regardless of gender. Some can easily become alcoholics while other can't stand the taste. We all have our own temptations and weaknesses to deal with. These difference makes some choices more difficult for some than others
However, homosexuality for example is not even an issue until you accept Jesus Christ as your Savior. This makes for a very difficult debate with non believers.