You are far from an athlete and your hand-eye coordination is basically non-existent, so you can't catch, nor can you throw. You are clumsy, slow and comically uncoordinated. Playing any sport is very much a challenge.
1. You tried what seems like every sport.
There was a search for one sport that you were good at, or at least were not absolutely awful at. Every single time, you ended up wishing you were sitting on the side lines, because even if, for some strange reason, someone was foolish enough to dare to hand you the ball, you knew that you were more than likely to disappoint them.
2. You dreaded gym class.
Getting picked last was the norm. The team that got stuck with you usually lost, and if, by some miracle, your team won, having you on the team made it an even bigger accomplishment, because they won, even though you were on their team.
3. People were (and still are) constantly trying to teach you how to play.
You can't throw a football properly or hit a ball with a racket, so most of your life, you have had people with good intentions, and a whole lot of patience, try to explain to you what to do. The same movements repeated, over and over again until frustration wins. But what they will never understand is that even though your brain understands what your body is supposed to do, your body seems to be unable to physically execute those actions.
4. You were never able to be part of a team.
And you might have been quite bitter about it. Everyone and their mother seemed to belong to some team and have this exciting connection with those who play their sport. It was unfair that being bad at something made you feel so left out. After all, you know that you tried your best.
5. It's easy for people to laugh at your very determined attempts.
Watching you play a sport is rather entertaining. The way you try to throw, how you fail to make a very open basket, and even the way you run, it is all funny. And even though you know that you are particularly lacking in the athletic department, it still sucks to have people laugh at you.
Even though you will rarely hit the ball when you try to swing a bat, let alone score the winning goal, you have accepted the fact that you suck at all things sports. But that's fine because you learned to not take yourself too seriously, laugh at yourself, and have fun despite your athletic inabilities when you are forced to play a sport.
And you will always admire the people who make something so difficult look so easy.