The trouble is, I, like a lot of men (& possibly women as well) know the dangers all too well, but still choose to think I know better. I use an old fashioned canvas frame tent & I cook inside it with a Coleman 424 stove (petrol powered) & I will spark up the gas heater if it's a bit chilly, for a while before going to bed (as well as make a hot chocolate if it's really cold, as boiling the kettle generates some heat)
Now I always go by what people did back in the 70s & early 80s; back then everyone used to cook in their tents, use gas lamps (another addition to my kit I've yet to try out) & some very old fashioned heaters, & you rarely, if ever, used to hear stories of people being overcome by fumes.
But I was a kid back then (80s, not 70s) so I suppose I wouldn't have heard any of these stories, & although camping was popular there probably weren't anywhere near as many people doing it as there are now.
Also, times have moved on now, OK I use a canvas frame tent, but I'm in the minority, most people use poly tents with full sewn-in groundsheet. Also, there weren't any carbon monoxide detectors back then (not that I know of anyway).
Anyway, I think for the price a carbon monoxide detector should be a
MUST for campers these days. I suppose many will be thinking back to those childhood camping holidays & thinking it was OK to use appliances in tents back then, so it must be OK (if not even safer) to use them now. Not realising how much tent technology has moved on in recent years.
Also, those campers who believe they are invincible (like me

) can put the minds of their loved ones at rest with the addition of a carbon monoxide detector (I know the more worrisome members of my family would be a lot happier if I had one in my tent when I go off camping alone).
What a shame none of these big stores offer them with tents &/or cookers etc, or that the media doesn't do something to help educate the new campers (& some of the more experienced ones) about the dangers of these things, then maybe this kind of wasteful & unnecessary tragedy could be avoided.