> I find that the cheaper option is often so much cheaper that buying several replacements is better than buying the better one. Ninja blenders vs Vitamix for example. Adding in the fact that I have no trusted evidence that Vitamix is actually better, I’d be fine replacing my Ninja every year vs amortizing the Vitamix over five or more years. And for the record my Ninja has been great so far.

I understand this logic, but the flaw here is that you are only considering bare functionality, not quality of function. This comes up a lot in small appliances and things like power tools, but is especially relevant in the kitchen. It's not only that you can perform a task better with a better quality product, it's that the result of the task is better for you. What do I mean by that? Well most cheaper products heavily utilize plastics, and shed microplastics due to friction wear during operation, where-as better quality products typically have more metal and glass construction and are designed with more isolation between the result of the task and the machine performing it.

The attitude you have here is common, and not necessarily incorrect from one perspective, but it is driving things like fast fashion and the proliferation of plastic on plastic contact in food prep in home kitchens, two of the highest contributing factors to microplastics ingestion, which is a problem that has strong correlations to population-scale hormonal imbalances, as well as key growing diseases like heart disease, diabetes, and cancer. Our society is literally contributing to killing ourselves in order to shave a few pennies per-unit off basic everyday tools and conveniences.