Also, social welfare systems are usually required because you tax people to a point they can’t save money.

This is a grave misconception. Taxes are not what stops people from saving money. Taxes are proportional to income, expenses, and/or wealth, so there’s always something left over.

Prices of goods and services are what stop people from saving money. Prices are always set as high as the market will bear, which leaves no room for savings aside from those who have an unusually high income.

The saying does not go, “the taxes are too damn high.” The saying goes, “the rent is too damn high.” Never forget that.