Chelsea went 50 years between titles. Still didn't stop them producing some good sides who played good football throughout that barren period. I know a few Chelsea fans who were around during the 70's & 80's who say how much the enjoyed it despite the limited success. If you look at United's title-winning era's they too came with substantial gaps - 1911 to 1951 & 1967 to 1993 - But they've always prided themselves (especially since the Busby Babes) on trying to build their success by playing attractive football. OK, winning league titles is a great thing. But sometimes you can enjoy the journey too whilst en-route.
I was a Chelsea fan in the 80’s too, and enjoyed it greatly even when we were shit. I was just being a dick.