I don't know to what extent those who don't use stabilizer have had clogged fuel systems, but the most telling to me was a set of carburetors I worked on for someone (who parked their bike all winter without it in there) and it was literally gummy inside the carbs. Like gel texture. Was a mess! Now, it doesn't matter if it's injected or carb'd because the fuel will react the same way, carbs just have the jets sitting directly in the fuel supply and injectors have the fuel sitting somewhere not in the nozzle... use the stabilizer and don't worry about it.