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yes. Ever had buyer's remorse? If you could get some of your time that you spent back, would you?

I have a lot of 'eater's remorse'.

I only really have buyer's remorse over expensive items as I can't replace them easily if they turn out to be duds/not fit with my workflow/etc.

I do sometimes wish I could not have spent time on things I spent time on, but you always learn something even from wasted time (even if that thing was "that was a waste of time don't do that again/avoid people like that in future").

Eater's remorse? Well you learned not to eat those things again ;D