@offelia Well, in France, for example, selling your blood is just not allowed and I'm gonna check but I doubt we have ever had shortages in "blood banks" (see, just using this word 'bank' makes people consider it as a merchandise).

When there are big or deadly accidents, people rush to give their blood.

I think it's because since we can learn, we always have considered giving your blood for free as a civic action, bit like sharing a piece of bread when you see a beggar, or giving your seat when an elderly enters the bus.

But if you have been raised in a country where money is the measure of everything and you've always seen homeless or junkies (before aids) selling their blood, it will seem a normal thing to you.

Education is the key to so many evils and disasters.
It is cheaper to raise a kid correctly than to fix a broken adult, no ?