What makes Lionel Messi such an easy player to love, besides his obvious genius with the soccer ball, is how he carries himself on the field and how humble he is when you consider he's the greatest player on the planet. You rarely if ever never see Messi complain or yell at the referees.
And you never see Messi fake an injury or dive, he's the rare expection in today's game. Young players watch how Messi uses his body to protect the soccer ball as he dribbles, shielding the ball from defenders and never going down.
If you want to stop Messi, you have to actually tackle him. He just won't dive.