Personally, I don't feel much pressure or guilt in doing what I do. It's just not personally one of my priorities making things environmental. I'd rather focus on designing things so they have a good emotional attachment and add value to a user's life, let them express themselves, etc. than designing some electronic widget that is C2C green. But that's just me. I'm not passing any judgement on anyone else's priorities.
And I'm not even going to get started on the fact that while many things can be designed to be recycled, few actually ever are.
I've just skimmed this so far, but the emotional attachment comment is one I very much respect and do my best to stick to. When designing, there is a reason to sweat the details, and to me sweating the details means someone will (probably without understanding exactly why) call the product I designed "theirs" and identify with it. It will be taken care of and will not be thrown away.
Green junk is still junk, and "wasteful" stuff isn't wasteful if it is not thrown away or even handed down.
Truly making an effort to make things that connect to people, through detailing, whatever, is really important.