Sorry to disagree, but saying, "Business plans are always wrong so stop obsessing about them!" is a foolish and cocksure attitude and a good way to suddenly get

Sorry to disagree, but saying, "Business plans are always wrong so stop obsessing about them!" is a foolish and cocksure attitude and a good way to suddenly get hit with a dreaded, "oh, I didn't think about that" moment when the fecal matter impacts the turbine as Mr. Murphy pays you a surprise visit. Sure you may not need detailed 3 year financial projections or spreadsheets coming out your ears, but if you don't have at least a basic plan then you run the risk of having to handle issues you should have seen coming if only you had a basic plan. Writing a plan is as much for the Founder as it is for any investors and only fairly experienced businessfolk can really get away with skipping it.