I also have a vested interest in my own life. And not having had children don't have a genetic investment in the future. So... should I not support improving energy efficiency and new technologies? Should I instead insist nothing can be done to improve our use of resources?
I doubt you feel completely anti-efficiency or anti-technology. You seem rather to believe that it is impossible to have greener energy and keep your lifestyle. Thing is, energy production has already shifted to greener options dramatically in many parts of the world and you probably never noticed.
And the value of good planning and simple passive solar building design can't be over stressed. Such simple and free planning can reduce the largest energy consumer, HV/AC by 50%.
Sure some stuff is oversold. I have a degree in thermal technology and understand the role marketing and capitalism has in promoting some technologies not well suited to the markets they are sold in. Ground (or air) source heat pumps for example work well in climates like the UK or Tennessee but are widely sold in areas with colder climates where they are pointless and inefficient. So some skepticism on the part of consumers is prudent.
It's never an all or nothing situation. We can improve our use of resources with wise use of existing technologies and still have transportation and warm homes.