Welcome, JWINQUESTION
In regards to your 1st question:
Wishing for something to be true, doesn't alone it true. It's cruel to see your child die before you do (probably it's the worst thing that can happen in one's life), but it happens. Death is a part of nature as much as life is. Believe if you want in an afterlife, but as far as this life is concerned, death will always be a part of it. Think about this: Most living beings on Earth, die young, long before their age. An octopus gives life to millions of eggs, because the vast majority of them will die almost instantly. Even so, life is so abundant on Earth that it still thrives. But this tells us that the so-called 'miracle' of life is not much of a miracle. However wonderous, it is the most usual and automated procedure that takes place on this planet, for the past 4 billion years, and we are just a part of it.
As for the 2nd question:
Why do you connect homosexuality with bearing children? It is completely irrelevant. Homosexuality appears on so many species (check Wikipedia), that you can not rightfully call it "unnatural". The fact that homosexuality does not result in reproduction, does not prevent it from appearing in a lot of species, even in some of our closest ones, like chimpanzees. So, if nature appears to 'accept' homosexuality, how much more should we, as "higher" human species, full of reason and compassion, accept it, and protect those who fall into that category, from discrimination!
And one other thing: if you accept only sex that results in reproduction, then what should be done about contraception, oral or anal sex, or even masturbation? All these are forms of sexual activity that don't result in reproduction. What should we do? Ban them? If homosexuality is wrong because it "doesn't produce kids", then all the latter activity is wrong too. But that's something that only a religious fanatic (like Talibans) would assume. Not to mention the fact that is a basic human rights question, and that is unethical, and in some cases illegal, to discriminate people on the basis of their sexual orientation.