What are the positives and negatives of friction?

Positives (advantages) of Friction:

Friction is responsible for many types of motion -

It helps us walk on the groundBrakes in a car make use of friction to stop the carAsteroids are burnt in the atmosphere before reaching Earth due to friction.It helps in the generation of heat when we rub our hands.

Negatives (disadvantages) of Friction:

Friction produces unnecessary heat leading to the wastage of energy.The force of friction acts in the opposite direction of motion, so friction slows down the motion of moving objects.Forest fires are caused due to the friction between tree branches.A lot of money goes into preventing friction and the usual wear and tear caused by it by using techniques like greasing and oiling.

What are the choices?

So what is the question