Homework causes stress so why do it? Additonally, there are many countries where schools do not give homework and students are still very successful.
High school students are very young which means they have plenty of time to spend.
Teachers have nothing important to say to why bother listening?
Studying is boring and takes too much time. You should spend time doing what you love.
Color coding things and organizing things is way too confusing and you end up mixing things up. Furthermore, it is a pain to constantly stay organized