The idea of gambling for entertainment purposes is more advisable when you want to engage in gambling because it is indeed a better approach than you come with the aim of earning while gambling is full of uncertainties that will not lead you to success to actually earn, everything will be less worrying if you come with the right mindset and approach, as you said above where you gamble by only using small bets so that losing is not a big problem for you, and if you or anyone gambles with the intention of earning (outside of entertainment) then obviously I doubt you would gamble with only a small budget, because your goal here is to "multiply" while on the other hand gambling is not for earning due to the fact of uncertainty, this is why gambling is better seen as a place of entertainment if you still want to get involved.