I'm sure you guys have had wonderful battery experiences.
On the other hand I've had Optima, A/C Delco, and Motomaster all die out. I've also had to help replace more than a dozen in friends vehicles (I'm the obligatory car-guy), some are failing one a season.
Going to the source - had 3 different parts suppliers tell me the same story: lots of battery returns in the last few years and they are quite annoyed by it.
...and no to the abuse of batteries. My cars live better than I do.
I have heard particularly with Optimas that they suck now. I think they moved manufacturing to Mexico and are now manufacturing them to lesser specs to save money.
I think in the end that's the bottom line, all these companies trying to save money by reducing the quality of their products.
I guess you're in Canada since you mention the "Canadian Tire Motomaster brand"
junk batteries. I hate them.
However, I've heard good things about Ford Motorcraft batteries. I've always had surprisingly good luck with anything Motorcraft I buy. Of course you do pay the premium for it.