If I told you that you can never eat chocolate again for the rest of your life, and you expressed sadness for not being able to experience the pleasures of eating chocolate, would that be equally perplexing?

Just because our desire for chocolate is a primal evolutionary imperative, doesn't mean that it's wrong to develop an attachment to it. Why is it ok to express sadness over missing out on physical pleasures, but not psychological pleasures.

because that's not the same thing. You can have the pleasure and meaningful experience of raising a child (which I remarked in my post), there is no actual pleasure or meaning to the idea of reproduction as such.

The actual comparison would be for me to express sadness about the fact that I cannot pass on my desire for chocolate to the next generation, which to be honest I couldn't care less about.

The fact that the kid will have another kid and bring you grandchildren is though.

You can be gay and raise kids these days. That is to say Joscha Bach can given that he hails from Germany and the US, in some very conservative countries I guess that's an issue, but anyway that's not his point.

You can certainly be gay and raise children, but they’re at best half you and your partners’ biological offspring.