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Limited or unlimited, all money is created out of nothing. Some just takes a little more effort or energy. In the end it is not how money is created that gives it value, it is people who are willing to accept it as payment for goods or as a value transport that give money value.

Almost all . But that could change if we tried a Mutual Credit System such as Local Exchage Trading System.

Nonsense. Money are assets that have REAL value. Like gold or silver. Those have value because of their rarity, the work it took to mine them and the use they have. ONLY Fiat money is created out of nothing. Even bitcoin takes WORK to create, so it can't be created in unlimited amounts like paper currency.

I do pay for my electric bills too but I don't like mining with a cpu
instead mining with my brain seems much more productive...and efficient.

steem it just use the ledger to confirm transactions and not to generate value.. is the short answer to your question.