But what's the situation here?

What if we know a famine is coming and so I create a food stand and sell burgers at $5 a burger to everyone and 1 billion people buy a burger from me when they could have bought something else to eat pre-famine. Now I've made 5 billion dollars (we're going to greatly simplify this thought experiment) and I buy up tons of food.

How did I obtain all of that food? Well, 1 billion people consented to a trade with me for burgers in exchange for money. So now what if those people all get together and say, we want you to give us 50% of your food!

Well, why the hell did you all consent to $5 a burger then? You could have literally negotiated it at $2.50 a burger and then saved the other $2.50, couldn't you? Or why didn't you all buy $1.00 salads at the other shop instead and save up the remaining $4.00? Do you understand that to demand what I have now is to simply say you consented to $5 then decided to show back up with a mob and threaten me unless I sold it for $2.50? And what if I wouldn't have consented to $2.50 so I stopped selling burgers and went out of business? Then everyone could have just got that $1 salad instead and saved that money for future food.

So now we're in a famine and people are without food and I'm to blame because I have food? I need to give everyone back because everyone changed their mind due to future circumstances?

And hell, I would personally be more than happy to help GOOD people in need, but how do I know who's good? Would you feed the child rapist if you had the food? Would you let them into your home and feed them? Or just expect someone else to do all of that for you and assume you're playing your part because you vote and get taxed?

So some people don't deserve your food even if you have an abundance, do they? And what if I let someone into my home and they don't just take what I offer, but they try to take all of it? What if they try to kill me and my family? Should I trust the next person who comes by asking for food? If a mob shows up at my door with pitchforks and demands - the same ones who CONSENTED to pay me for my burgers before, do I just open my doors happily?

You're simplifying a hugely complex construct. Life isn't as simple as this and people aren't as trustworthy as this. I'd see all rapists and murderers dead. The ONLY reason I am actually NOT in favor of the death penalty is because I do not want a single innocent person murdered for something they did not do. If we had an unequivocal way of knowing rapists and murderers committed the acts, I would say immediate death penalty for each and every one without question.

Not all human life has the same value. We all know this and we all live this way, we just don't want to think about it and certainly don't want to talk about it in public because it's not the politically correct thing to talk about.