it can be. It just depends on what you are interested in. If you are interested in a scientific field then it is an amazing way to use your time. But if you are bot interested in science, it is a waste personally.
lol i saw ur comment. so i am answering according to that
i think it depends on what exactly you want to do in terms of math. if you aren't planning on going into engineering or similar fields, concepts like calculus can be a waste of time. however, that being said, I think basic math like adding and subtracting or percentages is very useful because you can use them in everyday life.
