Therein lies another issue with diesels. Owners are clearly delighted with their choices - because they don't have to stand outside them when they're driving. It's not the driver who has to breath in the high levels of particulate matter belching out of the back, it's the poor kids in pushchairs by the side of the road.
Also it's those who are outside who have to put up with the extra noise from diesels. Of course owners will say that their diesels are quiet, one even said in this very thread that diesels are quieter than petrol! But all that's happened in reality is that they've become immune to the rattles, they no longer hear them. So again it's the pedestrians in urban environments who suffer.
No doubt some will now say "diesels are much quieter now, you're talking about older cars". Well I've been in a few new diesels in the last four years when being driven to and from my dealership for services to my car. Without exception they were noisy. I once made the mistake of driving one of their cars myself- a new B180 cdi. God it was awful. Noisy, rough, totally unrefined. But not real a fair comparison with my C-class I'll admit. Then earlier this year I had a brand new Audi A4 2 litre diesel as a hire car in Spain (instead of the petrol 3-series BMW I'd ordered grrr). Better than the B-class but still not for me. It was rattly at tick over and low speed, a rattle that could be heard when the windows were open and felt through the throttle pedal. It was nice and quiet once up to a 60/70 kph though. (What a boring car it was however, but that's another story comparing Mercedes with Audi.) So as I said, I can only assume diesel lovers become insensitive to the characteristics that I don't like. It's probably wrong of me to say they don't care, it's more that they don't know.