And they’re not really letting us kill ourselves humanely anyway - Medical Assistance in Dying laws are still incredibly restrictive and they actively prosecute people who sell alternatives.

Which is an important practial limiation of course. But I'm currently discussing this on the level of the underlying ethical principle, less on the level of practical implications, because the latter could possibly be changed by forming an appropriate mindset in our society.

Just because I find joy in life I can’t force that on other people. We all have different perspectives. I look at it like joy is not guaranteed. The only thing that is guaranteed through life is suffering and death. [...] Why guarantee suffering in another person.

Sure, but would it be equally okay to deny someone their shot at joy? Even without (much) joy, some might see the suffering as part of their journey, a part of the experience of life which they could still prefer to not being born at all. We never know until we can ask and expect an answer to that question.

I don’t need to have kids for survival and we have too many people already.

And it's totally okay for me if these are your reasons for not having children. I agree with a multitude of reasons why someone want's to be childless. So I hope you don't get me wrong here. I don't give a fuck whether someone wants or doesn't want children. It's their life and their decision regardless of their reasons. I just find the topic of natalism interesting from a philosophical point of view.