As a sweeping generalisation: Europe has chosen to value more stable employment opportunities with lower potential upside over highly volatile employment opportunities with larger potential upside. America has chosen the opposite. You're speaking as if there's an absolute truth in which model is better, but as we're finding in this very thread, American people are coming to Europe to build businesses (and Europeans are going to America to do the reverse).

I won't rehash what brnt has said in their reply, but I will echo their sentiment: The System is me and my friends and my family and my co-workers working together to provide healthcare and education and security to each other. I pay taxes for that reason.