But then you're constantly either breaking in a new pair, or dealing with a pair that's falling apart, and you're lucky to get 1 month of good comfortable wear out of those cheap shoes. And you have to go buy them every three months, and shoe models change constantly so you have to find the current cheap pair that actually fits you.
I am lucky I have a wide range that I find comfortable, because the $30 Costco shoes and the $180 On Clouds are all the same to me. I also don't buy them every 3 months, maybe 6 months at most frequent. Last time was probably almost a year ago, and I got 2 pairs, one to keep nice so they're presentable, and the other for literally anything else, and they look terrible, but still aren't coming apart.