The thing is, there are some people who will drive slowly because they are cautious over the conditions, and when it snows they may well be driving at 25 mph in a NSL (like i was last night), but are also likely to drive at, near or even above the limit in fine conditions, and I can understand them.
There are others who feel their skill come straight from Castle Greyskull and they can drive like their hair is on fire, whatever the conditions. They will impatiently tailgate the slower drivers and overtake wherever possible, often throwing the retard in the slowmobile a scornful glare as they pass. These drivers are often the ones you see dangling from trees or hedgerows around the next bend. However, as I was young once and I can still be supremely arrogant or impatient at times, I can understand these guys too.
Then there are those who drive at a set speed everywhere, whatever the conditions, usually at 40mph. These tend to be (but not exclusively) old duffers who presumably believe that they are only safe when proceeding at exactly 40mph. Either they do not trust their vehicle (usually an old fiesta or micra...) or they do not trust themselves. These are the ones I do not understand.
If I was scared that I would suddenly, for no explicable reason, lose control and veer off the road in a fireball of death and destruction once I hit 41mph OR if I was scared that, should my speed drop below 40mph, my car would explode like something out of a Keanu Reeves film, I would walk. Or catch the bus. Or find someone else to drive me, with eyesight and reactions that I could trust and who owned a car that hadn't been boobytrapped by international terrorists.
When I'm old and grey(er), I'll have hopefully had all the adventure my life needs and I prey I won't find myself thinking "Oh good God... I need to nip to Tesco... better fire up the fiesta and get ready for another white knuckle ride along the highways of hell!"