I think that we should allocate our money into 5 categories.
1. Necessary expenses. I am talking electricity bills, food, school fees (if you are studying or have children), housing, healthcare, and transportation. I believe this group is where most of our money goes because we basically can't survive without these things.
2. Emergency fund. In cases of emergency, we should be able to get some money for it. Especially in countries where healthcare is not free, we should be prepared to pay if ever we get into accidents or we get sick though hopefully it never happens but still we have to be always prepared either way.
3. Savings. Some people save up for specific things like buying a better house, a better car, getting your kid into a better school among other things. Some people may just save for the sake of having money to pull for emergencies. I think emergency money and money I want to use into building a new home should be separate.
4. Investment. Aside from our day jobs where we get most of our money to pay for our necessary expenses, we should invest in assets to make our money grow. This could be gold, real estate or cryptocurrencies.
5. Luxury. When I mean luxury, I do not actually mean it has to be expensive. But I say luxury because there are things that we do not need but still want to have or experience like traveling or eating at a good restaurant. I believe that even though we should be smart in finances this does not mean we have to completely deprive ourselves of enjoyment.
I believe every adult allocate their income thos way, because this are necessary for everyone. The difference for most people is the percentage you allocate to each of them. When starting I don't think you should allocated much to luxury, rather you allocate more to investment and savings. The growth of your investment let you have more money to live a luxurious life. Necessary expense and emergency fund is very important, because it helps to run your daily activities, while emergency fund is very important, because you don't know when it might come handy.