Whether it is gambling, trading, or investing, there's always a risk, and you know what? That's what makes the thing exciting.
We know that in all 3 of the things that I said, there will always be winners, and there will always be losers. Those who risk their money have the chance to gain more money.
Of course in gambling, risking alone isn't enough for you to gain. There's still an element of luck and strategy. As for my experience, I can't remember a time when I put my money into somebody who had a low chance of winning and fortunately won the game (more on sports bets). Most of the time, I lose whenever I put my bet on somebody who has a low chance of winning. Anyway, this isn't only applicable in gambling, but in everyday life as well. I mean those who are risking their lives working for 8 hours just to gain money. Those who are risking their lives working for other people just to gain income.
Overall, not risking whether it is gambling, trading or investing will not gain you any money, and if you do not take the risk, you will just be jealous to the people around you who took the risk and fortunately won.