Life was harsh in early Old Testament times. The wanderings and struggle for survival of the Israelites did not permit prisons or rehabilitation. Anyone who deviated seriously from the norm was either stoned to death or exiled. The Old Testament prescribed the death penalty for the crimes of murder, attacking or cursing a parent, kidnapping, failure to confine a dangerous animal resulting in death, witchcraft and sorcery, sex with an animal, doing work on the Sabbath, incest, adultery, homosexual acts, prostitution by a priest's daughter, blasphemy, false prophecy, perjury in capital cases and false claim of a woman's virginity at the time of marriage. christianbiblereference.org
I consider myself a Christian...one that needs a ton of work. However, the above statement comes from a piece that points out so many of our perceptions of "right and wrong" according to the Bible, have to be taken in light of the times in which they were written. Corinthians tells us to be kind to our slaves. Are you going to take that literally or use the parts of the Bible that suit your argument? Many of the terms used (Those used in actually writing the Bible) to reference homosexual acts, are in reality translated to describe things going on during that time, for example, men having young boys as sex slaves. The bottom line is if you strayed from what was considered the norm, it was an "abomination"...a sin...and you could very well be put to death.
Now having said that, my personal view is that there is a big difference in someone who truly is emotionally, physically and sexually attracted to the same sex and someone who decides to "experiment" in bisexuality. That is a choice. Is it right or wrong? Don't know and don't care. Just pointing out that someone who is secure in knowing who they are and decides to tryout for the other team is making a choice. It's not a choice for someone who has lived their entire life knowing they were attracted to the same sex in the exact same way I am attracted to a woman. I don't need science to prove anything to me with regard to that and I don't need anyone interpreting the Bible for me to tell me someone is going to hell, especially when they faced the same punishment for working on Sunday as they did for screwing farm animals.