Haha, I see a lot of changes here. As far as I can tell by myself, I am a child of a middle class family. That's why I spend money thoughtfully. But it depends as much as to say what kind of state he lives in and what the price of everything can be. Let's say you live in a country where everything is very cheap. Your expenses will decrease a lot but you spend based on your mindset. Like I always spend a little more because I like to spend money and I'm not a spender.
In my country, people who like to spend money beyond their own needs will be considered wasteful regardless of what class their family is from. And for the matter of being wise or not in spending money, actually it is always determined by the level of money and also the value of money in each country which is also accompanied by the price of goods in each country itself.
Because in my country spending twenty dollars a day is considered a lot for the simple class of society, not for the rich where they can spend up to fifty dollars a day. So all of these things are measured based on the price of goods and the value of the currency of our respective countries because these things are always different from one country to another.