I find him hard to love, as an England fan...the Hand of God lives long in the memory.
Maradona was emblematic of
fútbol criollo, the unique style of football developed in South America that emphasized individual artistry and dash - and was not above cheating when opportunities presented themselves.
The creative, subversive nature of
fútbol criollo was a cultural counterpunch against The Man as represented by the European colonial footballing powers' staid and industrialized ideas of teamwork and 'fair play'.
While Europe had its creative players from the very beginning, South American football elevated the role and character of the gifted individual into a key facet of the game, without which football today would be unrecognizable.
If one man ever captured all of the qualities we associate with
fútbol criollo, that man was Diego Maradona.
No not the greatest of all time. That would be Pele in my opinion.
I think claims for the "best" player are really impossible to evaluate, because players played in different eras and prior to the latter half of the 20th century there is little to no footage to compare. For example, many credible observiers who watched both Garrincha and Pele play claim the former was a better player. The only record we have of Matthias Sindelar on the pitch are a few newsreel scraps. In contrast, modern players' entire careers are documented on video.
The closest I think we can get to an evaluation is to declare a player "one of the best players ever" and Maradona certainly qualifies for that.