it only wastes your time if you dont enjoy the sport you are playing
It depends on your opinion
Most people spend about 3 hours for one normal game of football, hockey, and basketball. You are not going to hear from me.
different people with different lifestyles! some people waste more time than others, depending on how idle they are during the day i suppose.
Waste the electricity or use the electricity, in the end you still pay for the amount you use. If you value your money then wise consumption is advised.