Regrets are tough. I had a job offer that I almost took but decided I didn't want to relocate at that time. For years I wondered if I had made the right decision, but then I realize that I would not have my wife and kids had that happened. My regrets are usually along the lines of "I wish I would have accepted my cousin's offer of a ticket to see Stevie Ray Vaughn" or "I should have gone to that Nirvana concert".