Ronaldinho was pretty much done by 26. He didn't entertain at Milan to the same extent he did at Barca.
Unique player though, nobody played like him before and nobody has done since. The things he could do with a football at his feet, bloody hell. You see videos of him kicking a ball around with professional freestylers and he's better than all of them.
That overhead kick he scored where he cocked up his control then flung himself at it just absolutely sums him up. His improvisation and 'expect the unexpected' style, just brilliant.