Here open this
tell me what you'd use ever use it for unless you're going to study something math related, I'm interested.
basic maths like calculating sizes and converting units are very important in my opinion.
Really? Algebra is the most useless?
Algebra teaches basic ideas of abstraction and generalization that are necessary for any study of math, science, engineering, economics, I could go on but we'd be here for a while.
If you don't understand why being able to generalize 1+1=2 to x+x=2x and then reversing the process to solve for x might be important somewhere down the line then you're either not far enough in your education to get it, which is fine but you should trust me that it's going to be important, or you actually "want to work at mcdonalds" in which case I'm gonna back up so I don't disturb your little bubble.
Math is very important in life. It is often used to calculate how much weight the truss in your house can withstand.
People don't just slap a beam here and there yeah there are regulations to go by. Which is why an architect will draw up your plans and have everyone and their mother look at it so they make sure his calculations are right and your house doesn't collapse in on itself.
Predicting the rise and decline of the stock market value is one of the most important uses of maths - among the many many crucial uses - that there are. There is an uncountable amount of people that are rich just because of it, not just the people that make the predictions (Actuareal Scientists) but more than 80% of regular people that make investments, gain money purely from the fact that they have a relatively good knowledge of stock value and how it will change thanks to statistics, calculus and data prediction; all of which at an incredible high level.