You can be an adulterer and a Christian. You can commit any sin imaginable and still consider yourself a Christian. Homosexuality is no different.
A Christian is just someone who believes in Jesus Christ as a messiah. You are referring to something much more specific.
Being homosexual or lusting after a women in your mind are equally damning, but rejecting these thoughts and actions and leaving them at the Cross is the message of the Bible.
Also, how does Red Lobster do so well in the south, let alone pork products...
right before that, in Leviticus 18:19, "'Do not approach a woman to have sexual relations during the uncleanness of her monthly period."
and right before that, in Leviticus 17:15, "'Anyone, whether native-born or foreigner, who eats anything found dead or torn by wild animals must wash their clothes and bathe with water, and they will be ceremonially unclean till evening; then they will be clean."
and my Favorite, Leviticus 19:19 (one page after homosexuality): 'Do not wear clothing woven of two kinds of material."
That Cotton-Polyester blend you're wearing? You might as well be having gay sex, as far as The LORD is concerned. All of the above are hellworthy trespasses.
so with the above in mind, everyone is ignoring the basic tenants of what the bible says. Therefore, using your logic, you must have a hard time viewing just about anyone as Christian.
"For although they knew God, they neither glorified him as God nor gave thanks to him, but their thinking became futile and their foolish hearts were darkened.
Although they claimed to be wise, they became fools and exchanged the glory of the immortal God for images made to look like a mortal human being and birds and animals and reptiles.
Therefore God gave them over in the sinful desires of their hearts to sexual impurity for the degrading of their bodies with one another.
They exchanged the truth about God for a lie, and worshiped and served created things rather than the Creator—who is forever praised. Amen.
Because of this, God gave them over to shameful lusts. Even their women exchanged natural sexual relations for unnatural ones.
In the same way the men also abandoned natural relations with women and were inflamed with lust for one another. Men committed shameful acts with other men, and received in themselves the due penalty for their error."
Though this category in Corinthians is about who will not inherit the kingdom of god, and then in Timothy it is describing who the law is written for, so in either case it is not distinguishing categories of sins, but merely listing them.
Elsewhere in Paul, homosexuality is equated with the greedy, the sexually immoral, thieves, drunks, slanderers, idolators and swindlers, but makes no mention of murderers.
edit - the passage in Corinthians is also interesting as it is in the context of a wider passage banning recourse to civil law in secular courts between believers.
That's a pretty intense bastardization of biblical theology. It's fun to snicker and say things like that but your logical gymnastics are quite embarrassing to those who understand the correlation between Christ, the Old Testament, and covenant theology.
But speaking to the correleation between Jesus and the Old Testament, everyone should also read Isaiah 52:13 through 54. This is the savior foretold in the old testament, and where matthew/john/paul/ringo draw most of their confirmation of Jesus' credentials. Does this sound like the Jesus we all know?
"You shall not make for yourself an image in the form of anything in heaven above or on the earth beneath or in the waters below."
However you can rape the wives of your defeated enemies after battle, which the vast majority of Christians would find horrifying:
"When you go to war against your enemies and the LORD your God delivers them into your hands and you take captives,
if you notice among the captives a beautiful woman and are attracted to her, you may take her as your wife.
Bring her into your home and have her shave her head, trim her nails
and put aside the clothes she was wearing when captured. After she has lived in your house and mourned her father and mother for a full month, then you may go to her and be her husband and she shall be your wife.
If you are not pleased with her, let her go wherever she wishes. You must not sell her or treat her as a slave, since you have dishonored her."
There's a lot of basic tenets of the bible that Christians ignore. Wearing mixed fibers, eating shellfish, donkeys and oxen co-working in agriculture.
If you go by basic tenets of the bible, most Christians don't seem to even know what they all are, let alone follow them.
See, for example, Tina's, Jonah's and Blake's testimonies:
http://www.youtube.com/watch?v=cA4gpJUpvpc
http://www.youtube.com/watch?v=PbAqzGsjl30
Those videos are featured by the Courage apostolate:
http://couragerc.org/courage/#testimonies
This comment is not intended to be inflammatory; my intention is simply to share an alternate perspective.
And fair play to them if it is what they believe.
It doesn't work for everyone though, as is eminently obvious if you look to scandals over the years across all religious groups who swear selected members to chastity.