I almost never returned stuff I bought with full research until prices started to increase significantly from 2020 to now. At some point the inflation of product prices flipped a switch for me. I won't return products I've used meaningfully but if I am not happy with the quality of the product or the initial experience I have no qualms, especially if purchased from larger retailers. Mostly what I'm talking about are outdoors/recreation products or purchases from Home Depot or Best Buy.

Still some kind of sense of personal responsibility for the decisions I made changed for me in the last five years. I still don't buy 5 pairs of shoes and return 4 or anything like that, but maybe that's more out of laziness.