Now, I have noticed a trend. Old people. Old people are generally bad drivers anyway, but they (much more than any other age group) are always in the left lane, and they're always going very slow. So I have to wonder...
I've never noticed that. You're probably noticing a "trend" because you think it's a trend. Discounting the older drivers who can no longer drive, but continue to do so, older drivers are NOT bad drivers if you are even remotely neutral about it. Quite the contrary, and I'm sure the insurance companies would agree. They are the best, safest drivers on the road, unless they're health is deteriorated and they're too stubborn to give it up.
That said, people shouldn't hog the left lane if they're going to drive the speed limit +5mph. That's for highways. If you're driving on the circuit around any large metro area, all bets are off - because of the far worse, younger drivers who think they own the road. Whippersnappers. When was the last time you saw a old person weaving in and out of traffic at 80mph+ with a cellphone on one ear? Last time you saw an old person road raging? Tailgating? Disregarding weather conditions?
No, they got to be old for a reason after all. Many reasons, but one of them is from not driving as if it were the Indy 500 every day. Go around them.
I recall reading a study that indicated that, on a per kilometer basis, drivers over 75 were nearly as bad as drivers under 20. The difference? They drive far less often and far shorter distances.
I'll see if I can find it....
* This isn't the one I remembered, but still interesting. Older drivers more likely to be in multi-car accidents. 7x more likely to get hit while attempting a left turn.