Ronaldo (and Messi - I don't propose to debate who is better) is just a freak force of nature. It's not just about talent - on pure talent it might be arguable that there have been (and are) others on the same level. It is about consistency and longevity of exceptional performance levels.
The fact Ronaldo has sustained astounding performance levels for well over a decade (getting close to two decades now) is astonishing.
Never mind club loyalties and views of these players as people, purely as a fan of the game I feel lucky to have lived during this era when two absolutely ludicrous football geniuses vied with each other.
Will be great to have one of them in the PL again. I hope he smashes it (except when playing us, when he should bomb of course
).