Using gamblers as an example who start out with just the intention to have fun maybe and then along the line turn into addicted gamblers that gambling begin to affect other areas of their life like their wellbeing like they stop spending on some important things just so they can make money available for gambling. Now talking about investing, I think it is possible to become addicted to investing so much that it begins to affect your wellbeing, like the person stops spending on other important things like good food, good clothes etc. just so they can have more money to invest? Do you consider that kind of addiction dangerous and not good?
Gambling and investment have little in common in their addiction, gambling can make people addicted if it is started by winning in the game. while addicted to investing if someone gets a big profit in the investment value.
but keep in mind that addiction to gambling cannot provide welfare even though he wins a lot, but if the big profits are obtained in investment, in my opinion, it can give someone maximum welfare.