That's great if it's your hobby but if I value my time at my current wage, darning socks is incredibly more expensive than just buying a pack of new ones. You just can't beat the efficiency of factory machines.
But its perfectly okay to say that the benefits the previous poster mentioned aren't worth more to you than the convenience + quality of just buying a new pair of socks. Because the truth of it is that darning your own socks costs almost nothing.
Could have easily saved BOTH money AND time if only I knew how to patch them. They only tore near the crotch (I am suspecting planned obsolescence).