that I didn't really want to increase the population of humans on the planet. I was willing to reconsider for the right woman, but I knew even before puberty that I would prefer to adopt than procreate. My wife seems inclined to be totally without kids, which I do not find objectionable.
The older I get the less desire I have to procreate, even if the unthinkable happened and I found myself single again. Barring an apocalyptic situation where I have the sole responsibility of repopulating the earth because literally no one else is left to do it, I dont have any desire to be a biological father.
As for protection, that's a multi-layered issue. We, not wanting to be parents, are doubling up to make it as impossible as possible. But we are limited. A latex allergy leaves us with restricted condom options. We still use them, but the non-latex start to add up in price over the years. Plus they seem to be more breakable, so having the second BC in place seems that much more important. And I can definitely tell the difference in my own pleasure level between using them and not. So, it is a bit of a difficulty, one that I would prefer to skip if the right option for doing so presents itself.
As for the other, spermicides and skin infection seem to be directly connected for her, so those are out. When we stopped using those, the infections stopped dead. Several forms of hormonal control have caused health issues and had to be discontinued. We have one that seems to work, but for the long term I do not, as an amateur biologist, see how disrupting the normal hormone cycle can be a healthy thing.