I mentioned earlier that I agree with this when it only affect you but in most cases it doesn't. Here is another easy example:
Bottled water - people got so used to it to buy it everywhere that they stopped doing what my grandma would do - fill up a container at home and take it with you. These days if you watch any of the documentaries what impact the simple thing as bottled water has on the environment you would be shocked. There is the manufacturing of plastic, gas used to transport it to locations and eventually the plastic is not reused in most cases but chucked away.
Another example is food - you go to your supermarket and buy minced meat (for example) to make a burger at home -> result is almost tasteless. But when you go to a local butcher outside of city that has a farm and you buy meat from him (minced meat again) and make the same burger -> result is amazing and very tasty. Were did it go wrong? Simple, people want more and more and companies try to cut ways how to get it faster and cheaper and as a result food loses nutritions, vitamins etc. etc.
The result of our choices are that the planet is getting worse and worse (tunas are radioactive cause of that incident in japan, most of the fish in the sea is loaded with mercury that is way higher than 50 years ago, oil gets spilled into the sea cause people want to drive car more and more so more oil has to be drilled out and it has to be done faster etc etc etc.
I'm not saying this should be all about global stuff, I'm saying that its not a choice that involves just that person.
20 years ago, you would go to a food store and the food would taste much better. When I get an egg from my food store and then when I get one from y grandpa who still has chickens etc. the taste difference is huge! We are in this together and our choices influence more than just us.
I'm not saying I'm against technology or progress, I'm saying that it would be nicer if things were moving for better without the crazy cost to environments etc. GMO, chemicals etc in our food is not a good thing no matter how one looks at it
))
I'm not a total party pooper, trust me. I'm just offering another angle to think about.
Ps.: here is one example what the choice of an individual causes (as you see it doesn't impact just that person but everyone)
http://www.youtube.com/watch?v=_YEGewENa6E