I was asking myself, how could we quantitatively measure how durable a brand or product is? I guess that a good indicator would be a data point that shows how

I was asking myself, how could we quantitatively measure how durable a brand or product is? I guess that a good indicator would be a data point that shows how long someone has owned and used certain products, so imagine a brand or product has an average "years owned" metric. And that's why I need your help! Just add your favorite Buy For Life products and fill the "years owned", "condition" and "frequency of usage" fields. We later will be able to calculate how many years certain products are owned on average and how durable they are (of course in relation to the product category and frequency of usage). Let's find out which products/brands truly deserve the description "Buy For Life" :) PS: Any feedback is greatly appreciated.