I haven't flown for counts on fingers three years now, since deciding that I simply couldn't justify the environmental expense any more. I reasoned that, as my family all live in the UK and I don't have to fly for my job, AND I'm not a big fan of hot summer holidays anyway, I was perfectly placed to bin the flights - and if I couldn't do it, the chances that anyone else could/would were slim.
I haven't looked back since. No more airport hassle, no more guilt, wonderful holidays in the south of France, Paris, Orkney ... We were planning a trip to Georgia (Caucasus, not US) by train and boat next year, and it is unexpected pregnancy(!), rather than lack of convenience, that led us to shelve it for now. My only regret is that I've never been to New York - but like expat, I'd really rather like to go by boat. One day ...
All of which is a long-winded way of saying that I'm with the protestors. Can't bear the way people - and governments - constantly defer and refuse to take responsibility for their actions on this.