Rancho makes a good point Coezi... it's not all about the cash. And it's not all about giving up the lifestyle.
I'm a student, so the amount of money I am prepared to pay at the moment is pretty slim (SEE: none), but that's okay because even though my energy bills are going to be higher, I'm pretty wise with my power usage so my tax break is going to put me in the black. I am going to be better off with this scheme, and a lot of people probably would be if they thought about it for longer than it takes to say "Axe the Tax". That said, once I've graduated and I'm getting some semi-decent coin, I would be willing to put in a fair chunk to ensure the longevity of the planet. I have always planned on having kids some day, so I would want to ensure that I would be bringing them into a world worth living, bugger the cost.
However, you do bring up an interesting point regarding lifestyle. Our lifestyles are going to change radically in the next 50 years purely due to agricultural pressures (combined with an ever expanding population). My industry is Agriculture and I'm specialising in Permaculture and Vertical Farming. There is a not a lot of research being invested in the permaculture side of things (most of the research is geared towards increasing yields in a highly mechanised monoculture farming system) but there are more and more people subscribing to the permaculture ethos/lifestyle. Grow more shit yourself, make compost with wastes, minimise other impacts, go solar, keeping businesses local and only buying stuff in season to reduce carbon transport impacts etc etc etc etc etc.
I'm meandering here. The point is that in 50 years, everyday life is going to look different. Taking a few small steps now (eg. solar, growing your food etc.) will reduce the impact this change will have on you. Conversely, keep trucking along and buy everything from the supermarket and one day you might find out that Durian is no longer available. No biggie you think, that shit tastes and smells horrible. A year or two later, there is no longer any wombok, and then lamb becomes expensive because pasture is becoming harder to grow and before you know it, your supermarket is reduced to aisles of "Hurricane Chow" and tins of wadded beef.
Rancho bought up a good one. The markets which only source their food from within 50kms are becoming increasingly common. There are other international projects like
www.slowfood.com which is completely changing the way people look at growing and distributing food.
In summation, I would give up a fair bit of my lifestyle just to ensure the longevity of the planet, and as all this carbon hysteria goes on, I have my 10 year plan which sees my life being very different to the one I have lived for the past few decades, most of which should all have a positive influence on the environment.
That said, I recognise the fact that most people would not give up any of their lifestyle. depressing really. what a selfish bunch of fuckwits. They make me re-think the decision of having kids in the future.
NB: I mention food all the time in this post because I deem it to be the biggest risk factor of this whole climate bizzo AND its my area of expertise.