Ok, this may come across as rather snipey, but FGS! Find another bloody crusade! Yes, it's dangerous to have your child in a car without a carseat - so is travelling by bus/coach/train where it is not mandatory and would probably be more dangerous for the child if the bus/coach/train were to be involved in an accident! Frankly, given the way certain bus drivers handle their buses where I live, it's a bleeding hazard just being able to see a bus, let alone ride in it!
Those of you who have the luxury of driving and having your own car can be as bloody smug as you like. I don't drive, nor does my partner. In the event that we are caught short and have to take a taxi to get from A to B, I will ask in advance if the taxi firm has a carseat. If not, what the hell are we supposed to do? Walk 20 miles from an airport to our destination?! I mean, why not, seeing as that would probably be safer in relative terms than taking DS on a bus/coach/train where we would probably have to fold up his pushchair and hold him whilst travelling. If I'm on my own with my DS (which frequently happens), am I supposed to be able to handle a buggy, a baby, 1/2 suitcases PLUS a toddler carseat because I can't be guaranteed if I have to get into a car that the person driving will have a carseat available?
Of course carseats should be used where available. At the same time, sometimes, you just have to take a calculated risk and be prepared to accept the consequences. This probably makes people who have no choice but to travel sans car seat pretty agonised, let alone having to deal with Judgy McJudgy who thinks you don't give a damn and are akin to a reckless murderer!
JarethTheGoblinKing, I'm usually not a sweary parent in public but frankly, you would have gotten the same (if not a more vociferous) reaction from me if you'd dared to shout at me in the manner you described above. Who the hell do you think you are to shout at me/someone else, all because you have made an assumption from a snapshot image that a parent doesn't give a damn?! And before you say, well, they had a carseat, you wouldn't have, the end result would still be the same - a child not in a carseat. Of course, perhaps you'd reach a different conclusion if you were to make proper enquiries as to why a child isn't strapped into a carseat, but somehow, I doubt you'd be capable of such a slow-measured and well-thought out reaction if you are usually so quick to rush to judgement.
Sorry, that was a bit long, but it's one of my ranty subjects!