With the share market we are believing some third parties for our profits whereas in gambling, we are relaying on our own skills to make profits. I do believe on my own capability for my fortunes than others.
In stock market, you can rely on professional fund managers to manage the money for you. But those manager on average will be worse off than the index track funds.
In gambling, only very few professional gamblers can make a living. Most of the gamblers can only have fun, not the money.
I dont think that fund manager really manage our money well. If I not mistake they will take some percentage right? And you can't fully trust them because we give them our account so they could manage it right? So if they are not trustable it will be bad because they can suddenly scam us and get away all of our money. So it is better to control it by ourselves it is much safer