Life can be cruel even if you've made great plans and took all the precautions you could think of. Illnesses, accidents, the lack of a social net because your country was set up that way, crime, the list goes on.

Also you’re neglecting the cost of transportation (almost certainly a car, with gas and insurance), rent, and medical expenses.

Assuming you work full time, you are making $3360 a month, less taxes.

That means that even if you get the bottom 25% of rents, over half your take home pay goes to rent. Then we need health care, food, taxes, transportation, clothing, etc.

Not a lot of savings easily available there.