Technically the credit score is doing its job then.. if you never have a credit and always pay in cash there is no actual record of you being credit worthy. You may be the most responsible person on earth (to your point, always living within your means), but I do think someone's credit worthiness is a fair litmus for at least some character traits
One of my old old old jobs was helping screen renters for apartments, mostly just collecting the necessary paperwork and presenting to landlord, well I found an almost direct linear correlation between credit scores and just general human decency.
The people with the 780-800+ range always had the paperwork together, showed up on time or early to appointments, were responsive to email, etc.
The people with the 500 range always had an initial sob story and would beg for consideration.. then would either show up very late or entirely miss appointments, not answer emails, terrible at communication, etc., then a month later not understand why the landlord went with someone else
If I'm hiring someone to represent me or my company/brand I'm certainly looking at credit scores. Granted, some people will get screwed (divorce, loss of job, etc.), but with hard work you can recover your score.. and I'm not aware (personally) of an employer that would outright not hire someone based solely on credit score