So I just had an argument with my g/f about driving speeds with the kids in the car. She hates it when I go over 70mph on the motorway (that's the speed limit, so feel free to replace that with your local freeway sped limit to relate more).

Her argument s that it's irresponsible and unnecessarily risking our childrens lives. 70mph is the speed limit and therefore that's the maximum speed I should drive when the kids are in the car.

I argue that I should drive at whatever speed I feel is appropriate for the driving conditions and that I wouldn't take risks with regard to my childrens safety and driving at 80mph in good driving conditions isn't doing so.

How can anyone say 80mph is too fast from a safety standpoint? Surely that argument relies on the fact that the faster you are going the more dangerous, but in that case why is 70mph ok? As you can legally drive at 60mph on the motorway which is surely safer than 70mph. So if 80 is taking unnecassary risks, surely so is 70, right? And obviously the same argument could be applied to driving anything over like 20mph or w/e speed limit has a risk factor of practically nil for the driver/passenger.

Now unless anyone can argue that there is a particularly steep and sudden increase in risk once you go above 70mph that doesn't exist prior to this speed, surely that argument is stupid.

You can't argue that it is more risky due to driving faster than the other cars, as at 80mph is a very common speed to travel at and you certainly wouldn't spend much time in the outside lane doing 80 as you need to get the fuck out the way of all the people driving much faster than you, of which there will be many.

I explained this to my gg/f. She got very, very angry. I tried using expressions like your argument is invalid. It didn't help. She threatened to state that I think it's safe to drive at 100mph on facebok to shame me (taking my above argument a stage further), I explained to her that her friends are fuckoing stupid and if need be I will tell them so in the public arena of facebook. She is yet to post it.


The point here is I'm sure I'm wrong, I just can't figure out why. Please help.