I first saw Messi when I watched a game at Camp Nou when Abidal and Maxwell were still playing for Barça. He scored 2 goals and turned me into a Barça fan. Xavi and Iniesta performed as well at an extremely high level, but Messi was extra special because he had this gift of creating goal chances out of nothing. Watching him play is such a pleasure that I have become addicted to watching Barça games. Living in the US, I tried really hard to understand American Football, Baseball, and Basketball. I liked watching the Yankees when they won their World Series, I watched Michael Jordan and I watched the 49'ers, Packers, Patriots etc. win Superbowls.
But watching Barça at its best (like the final 20 minutes of the home game against Bayern in the CL semifinal) is just like nothing else. Messi's two goals were so amazing, no other sports that can compare.
We are privileged to be able to watch football (soccer) played at this level, and Messi is the master all others are trying to emulate.
In addition, he is a team player who is helping his buddies Neymar and Suarez (and now even Arda Tuaran) to fully reach their potential.
Let's just enjoy what we are witnessing and hope it will last for a long time.