I'm not sure which of my posts has given you the impression that I think climate change "is a very serious problem", Clownfish. In this thread, I have made it quite clear that I am something of a "climate change agnostic". Consider the following from my initial post:

"I, and many people I know, am not foolish enough to believe that I know more than the scientists about climate change. And, as scientists themselves are quite often funded by far-from-impartial benefactors, it is unsurprising that they present contradictory findings on quite a regular basis. Some say we are stuffing our planet up completely, others say we are not. The truth probably lies somewhere in between."

To put it simply, I am not arrogant enough to make "set in stone" statements about something outside any area of my own expertise. I did, however, say that it is a good idea to look at better ways of doing things, which for some absurd reason (which you have yet to explain) you seem to find objectionable.

Also, to ease your confusion: when one goes on a holiday, it is customary to come back. Thus my one overseas holiday involved two international flights. I thought it was pretty obvious, but had forgotten that you have never flown (an assumption based on the fact that to fly and then criticise others for doing the same would be hypocritical).

And finally, the sorts of "more sustainable" practices I am talking about are the little things we can do that count. The use of energy saver bulbs: they produce the same light, but consume less energy. Timer switches on appliances: not using standby power when I am asleep. Using public transport where convenient: reducing the fossil fuels burnt when I move around. They are not perfect practices, but they are ways of achieving the same ends with better environmental outcomes. If that is a bad thing, please explain how. If it is not, please acknowledge that my ideals aren't as silly as you imply.