Egos are most of the time misleading. So I don't think it will be an edge for you if you are trying to win for the sake of your ego. Gambling outcomes are said to be unpredictable, however with skills and strategies on you, your chance of winning the bet increases. So win your bet because you know how to play the game well, and not because your ego tells you so.
But placing bets does not require the bettor to be proficient in the sport he chooses to bet on. I have friends who prefer to bet on ice hockey matches even though most of them have never seen the ice in their entire lives. Quite the opposite, my friends who bet on hockey matches do so out of their inner ego to make profits even in games they know nothing about because there is no other explanation for their choices. The same applies to slot game enthusiasts because they know that these games are programmed according to algorithms that do not allow for big wins and the percentage of loss in them is much higher than the percentage of winning, and despite that, they can easily become addicted to them in defiance of the simplest basics of logic.