''However, almost any legal code becomes dated in its specifics.'' How can you even use this as an argument to defend the bible when the bible is supposed to be divinely inspired, I expect the book to never become dated, otherwise what's the fucking point of the bible? If the bible is the only evidence god left, then he is a fucking idiot.
''The issue is the values and teaching we can derive from the law'' And what values did we learn here? The bible says, ''kill homosexuals'' what's the value learned here? That the bible is wrong?
''Now do you see how that works?'' No I don't. You said acting on your homosexuality is a sin but the analogy should be ''choosing to be homosexual is a sin'' No one chooses his sexual preferences on purpose. I didn't choose to like women, I didn't choose to like them slim, etc etc
''Unless you have a very good reason for choosing extinction over life such as being the carrier of a horrible and untreatable genetic disease then yes your behavior is irrational'' Says who, you? ''You should seek to explore the beliefs led you to embrace death over life and change them. '' I'm not trying to kill myself, I just don't want or need children and there is no argument on why that's wrong. It is certainly not morally wrong, in fact, you could argue that having kids is morally wrong, you are basically creating them just so they die later on and the possibility of having a very miserable life is also there.
''Acting on male homosexual desires meets all of the criteria of sin'' Is it? ''Sin is a bad idea or harmful deed something that leads to undesirable things happening to you. At a deeper level sin is not just a harmful deed, but a harmful deed that disrupts ones "life" with life defined as synonymous with ones connection to God.'' Having sex as a men with other men is not a harmful deed, though. There are plenty of homosexuals who believe in god as well, so it does not destroy the connection to god thus homosexuality is not a sin, you failed again.
You still haven't answered the fact that since God made everything, and since He knows all about it better than anybody, and since He owns it all, homosexuality is wrong simply because God said it is wrong. It doesn't need a reason other than God said it.

If you think like that and you are willing to follow the leadership of a tyrant that sets arbitrary rules then you are already lost. Even if a god existed, I would not follow him if he is using random rules and laws, unfortunately your god is supposed to be benevolent and all loving, something that doesn't fit with the rule to kill homosexuals, therefore god doesn't exist, yours in particular at least.