Ellectricity is not just electricity.
We are now facing global energetic problems, and the increase of energy motivated wars is a proof of that.
We are facing production growth for decades, and it's subsequent energy needs. The problem is that we don't have infinite energy, and if we don't stop now to think about how to improve our energy consumption, it will maybe to late in 50 years. Not to mention the ambient problem that this implies.
About that just tiny difference that you mention, I have to say I disagree. I don't think it's tiny. I think if we can change the selfish habits even if in a small things, it will make a major diference. Everybody agrees in responsabilize the others and the bigger polluters, but most of the people are not willing to change any of their habit's and abdicate their confort for a better planet. I think this is an hypocrite way of thinking and viewing things. As long as everybody thinks like this nothing is going to change and everybody is responsible.
We had a campaign over here a few years back about separating the garbage for recycling. No one was recycling garbage at the time. The campaign was made for children. It was a uge success. The adults soon realize that their children ask them way they don't split the garbage, and since they have no excuse everybody started to recycle their garbage. This are the small changes that change the world. The children today are going to be the politicians, the C.E.O.'s of tomorrow. If everybody don't do nothing because is too little, then nothing will change.