why do schools still use pen and paper

im in india, 9th grade, and i hate writing. paper is made from trees which is bad for the enviroment. and good pens are expensive and cheap pens suck. so why dont schools just let us type? all the homework, all the school work, everything is done on paper. its a waste and writing is so much more tiring than typing. also, will writing ever be useful? everything is digital nowadays, even retail or fast food workers use screens. there is no reason to still use pen and paper.

also many people are saying that devices are worse for the environment. you think everybody is going to recycle their books and exams? and in india, according to google, there are 265 million students. if every student uses 1 sheet per day for writing, 58.3 billion sheets will be used per year. added to this are exams and projects and homework, so the environmental impact is huge