Why is this such an interesting distinction to people? They act like by not trading you are not gambling. But at the end of the day any investment is about re

Why is this such an interesting distinction to people? They act like by not trading you are not gambling. But at the end of the day any investment is about realizing opportunity cost. There is an opportunity cost to holding fiat/cash as well. So in a way you could argue that holding cash is gambling that the fiat/cash is going to provide a better opportunity cost than other investments. What's more interesting to me is focusing on optimizing opportunity cost (which is always a gamble at the end of the day, it's impossible to NOT gamble).