You are actually true, no one will always win a gambling. Gambling can not be the main income of someone life, it should be just an additional income for someone
I don't completely agree. It's true that you can't win all the time but you have to make income/outcome calculation for your bets. For example you lose two 1-unit in a row but when you win another 1-unit >3 odds you can compensate your previous 2 losses. You have to calculate margins, your possible income and act like that. If you have a very good system you will probably win something. If you play without any plans you end up losing all in the long run.