ethanol truth and myth

[Kracker Jack]

Can some of you guys give me a lesson on ethanol and what it does to outboards? from water seperation, to the rubber on the end of the needle valves (does it cause them to get chewy and stick?) what does ethanol truelly do to not make your out board not run right? What additives can you add to conter-act these effects. I have accsess to non-ethanol but its more expensive. I have researched this issue but I just want to get yall's opinion.