Why does human life always come second to monetary gain?

I’ve always been bemused about how paper money has value, and thought to myself, why can’t you just print your own, surely people would just accept it, any hey what harm could it do.

Then you realise that this causes inflation and de-values every penny that everyone else have given their blood sweat and tears to earn.

But what if you found that every penny you spend on a credit, debit, or loan was created from nothing? and this money isn’t really valuable, its just a promisary note to repay!

So, though I don’t want to get all bilical on your ass, the bible does warn us (in its own way) that money is the root of all evil,
why do human beings always come second to monetary gain?

Surely it should be the other way round!