I am okay with a certain percentage of society's production being collected and funneled to the elderly, the poor, the sick, the young, the disabled. We can argue on what that percentage is, but it's clear that no matter how we slice it, we either give them a percentage of our production, or they die. We can slice it by taxes, we can slice it by investments (where everything costs more because a percentage of it is getting funneled to retiree shareholders), we can slice it by interest on treasury bonds (where we pay for it in taxes with extra steps). At the end of the day it's still taking a percentage of real production. I think the less complicated a system we use for that, the better, so I'm in favour of just agreeing that we can afford to give, say, 20% of everything society produces to those kinds of people.

Again, we can argue the exact numbers, 20% is just an example. Some percentage is also needed for public infrastructure works and stuff like healthcare, and we don't want the total to be too high, nor the component parts to be too low.