Question

is friction nessasary

Answer 1

yes friction is necessary in nature as it provides the resistive force to stop the body and prevent it continue its state of motion.
friction is necessary for writing . friction is necessary for walking, friction is necessary for lifting up a load by using a pulley.

Answer 2

Yes,friction is necessary in our daily life.without friction we won't be able to hold things,walk or do anything.so the force acting in the opposite direction of motion is necessary.