1. You're more likely to get STDs and STIs
Rates of STIs are also higher in Africa and the Middle East. The reason for that is not the reason you think. The eugenicist corporatocracy caused companies like Bayer to knowingly sell HIV positive needles. Basically, anybody who wasn't a straight, white male was denied services like health care or contraception.
2. You can't reporoduce, everyone should reproduce, unless if they are unable to.
This is coming from your own personal worldview that "everyone should reproduce". Actually, this isn't even your own personal worldview. This is part of the pro-capitalist religious agenda and is also the reason why abortions/birth control are frowned upon. If you look at a food chain, the most vicious of predatory species exist fewest in number, at the top of the chain, and owe their existence to the
large numbers of the people at the very bottom. This is how capitalism works. As for my personal views on the matter, I am pro-choice, I believe that you should reproduce, unless you do not wish to.
3. You think it is okay that you do anal intercourse? It is against human nature. Or fellatios to same gender?
Human beings are sexual beings. We crave sex all the time, it's one of the defining characteristics of our lives. As for your human nature argument, homosexuality, as well as anal intercourse, has been documented in various species occuring in nature. Homosexuals have existed before Islam, before Christianity and the Bible, before organized religion too, as a matter of fact.
4. What are the roles in the house? In a normal marriage, there are roles for both the male and the female, what about in gay marriage?
By your definition of a "normal" marriage, the "roles" that you talk about are mere constructs of society made to benefit the ruling classes alone and seldom represent the individual wants/needs. We have already changed most of that (for example, we no longer believe that God is okay with selling your daughter to slavery).
5. What can 2 woman do together in bed without any "toys"?
Honestly, I do not think discussing this will further the discussion any. If you really want to find out, search some videos on the internet.
6. God forbade it, and god knows more about us than we know about ourselves, and god will only tell us to do something which is best for us.
"God" only forbade it in three out of all of the thousands of religions that have existed since man.
7. Intercourse would extremely hurt for the back passage for a recieving male
Then don't do it!
I fail to see how this statement would either promote or reject support for homosexuality. Do you really think heterosexual intercourse doesn't hurt women?