> Why should others pay for your choice?
Procreation is a choice on an individual level but on a societal level it is not a choice at all, it is absolutely mandatory. So, someone's got to do it, and if you're not going to do it, then it's not unreasonable for you to contribute to others who are doing it.
Furthermore, if you benefit from future workers in any way in the future without having kids of your own, if you did not help pay for those kids then you're effectively benefiting from something you didn't do shit for: namely raising those kids who became workers who ended up paying for your pension, keeping the lights on, keeping your ETFs growing, paying for your healthcare, etc., etc... So you should pay, or you should have kids.