Under free market conditions everyone benefits who is party to an exchange. It ought to be remembered that it cannot be any other way when all transactions are voluntary. Of course, there have been many occasions when all of us have regretted a particular exchange, either because we had insufficient foresight, acted on impulse, or an unexpected change to our finances altered our preferences, etc. But markets exist because of human imperfections, not despite them. If humans had perfect foresight markets would literally disappear.