When I look at people who say they have no energy, I think they're behaving lazy and irresponsibly. That's because they don't have any energy anyway. If they tried harder, maybe their energy wouldn't be depleted so quickly; it would be recharged. :) If people are feeling low on energy, they should immediately meet up with a loved one they haven't seen in a while. I'm sure it will recharge their batteries.
Energy is absolutely essential for a quality life.