You're not speculating on price, you are trusting that the company will make sound decisions which will result in growth and future profits, thereby increasing

You're not speculating on price, you are trusting that the company will make sound decisions which will result in growth and future profits, thereby increasing the stock's value. People mostly invest in stocks that don't pay dividends as opposed to instruments that pay fixed returns or companies that pay dividends because there is far more upside potential. I don't want all the companies I invest in to start being big dividend paying companies because that impedes their ability to grow.