"Why should I change? Why don't you change is just as fair a demand." - because it is really not hard to tread more lightly on the earth with your consumption of finite resources. They are very simple tasks be conscious of the amount of power being consume each day - as I said if you'd prefer to live in a house utilising one room while having lights, electronics whatever on in 4 others then obviously it is an action without much thought and as I stated before generally a lazy action. More electronic equipment great - but don't cry about the price to take more energy for their use.
"Every time I see someone with solar panels on their roof I see a parasite loading his feed in tariff onto his neighbours( and worse, feeling smug about it). Perhaps it's an upbringing thing but I was brought up not to steal from my neighbours...."
LOL that's hilarious it's called individuals using initiative and putting their capital forward to lighten the load on finite resources and inturn return more power lowering the cost of their own consumption even returning equity in to their bank each quarter. "they are thieves stealing and putting it on their neighbours" LOL give me a break that sounds like a little sooky cry from someone that hasn't taken any initiative to contribute - the opportunity is there for everyone, if you choose not to take it and not to put any of your capital thee - that's your own thing don't cry foul.