Wasn't your fault. Vent your anger against VW and other copmanies and people who deceive others. But please, above all, don't stop caring. We can have our better world, but only if there's enough people who still care.

Don’t feel bad. Each and every technology has its failures which will bite at some point. I expect that in a few years, e.g. the recyclability or toxicity of batteries in electric vehicles will hit headlines.

This NOx emission thing is more a PR disaster than an actual environmental problem. The VW diesel engines are still remarkably efficient and nice pieces of technology, at least if you compare them to the huge gasoline engines that they often replace.

(FWIW, I drive a diesel but not made by VAG (this is Renault). It’s probably worse than any current VW engines, but because it’s a few years older, no one complains. It passes the local MOT tests with flying colours, and I get around 5.6 l/100 km or 42 mpg for a minivan which I think is nice enough).

Not your fault for buying the marketing. Maybe your fault if you were a smug[1] tool and pressured anyone else into also buying.

[1] http://southpark.cc.com/clips/155193/thanks