That's right. If all were losing all the time, and only this way gambling sites could be making profits, gambling would cease existing long time ago.
Man, you're wrong. Gambling it's not about "losing/winning" this is about thrilling and risk. Human need something to thrill about. This is from where gambling appeared.
So if gambling would not create such moments for us, only in that case it would disappear long time ago.
I agree partially with this, there are a few selected ones that can earn money through gambling so for them it is truly about winning or losing and the same is true for the casinos themselves for which this is nothing more but a business, but for the rest it is about the excitement they get when the win, after all people practice extreme sports as well and it is clear the motivation of those people is the adrenaline rush they get when they practice the sport, and the same is true with gambling.