In norwegian there's a saying "when the best becomes the enemy of the good". Not sure what the English equivalent is. Not smoking is best, but e-cigarettes are still better than smoking regular cigarettes, in many ways. Like riding a bike is best, but riding a pedal-assist electric bike is a lot better than driving a car. But it's unfair to measure the "better" against the "best". Big transitions are hard, but smaller transitions can get you there too.