Hi @KatieMac I understand what you are saying and I know others that do this as well. Many years ago this too was recommended to me by medical dive professionals as a way to lower my risk. But I think this practice is now largely obsolete with modern dive computers that have conservative settings.
As previously stated, unless you have an older computer that doesn’t have conservative settings, you are wiser to set your dive computer for your actual nitrox percentage.
As previously stated, unless you have an older computer that doesn’t have conservative settings, you are wiser to set your dive computer for your actual nitrox percentage.