Quidditch

You think about Quidditch in human terms
It doesn't make much sense.
But you think of it in Wizard terms,
It puts Harry in the center of the game--
Where now Harry is the center of the plot.
It is a symbol, that Harry is the most important
Player out on the field, therefore the novels.

Not only that, in a Quidditch Game,
It's like Lacrosse, which can score 15 points
In 90 minutes. Scoring in Quidditch can be 10 points
So in 600 minutes--a short game of Quidditch--
An average score for a short game of Quidditch 
Would be about 500 points.
Add to that, the Seeker doesn't always want to find the Snitch
As it could result in their team losing the match,
So there's the added obstacle of the other Seeker 
As well as the crafty snitch.
And games can last about 80 hours
With Wizards in their supernatural long lives
And magical endurance.

All in all, it's a proper game for Wizards--near immortals--
To play.

What concerns me, is the average reader pooh poohing it
Because they don't think outside of the box.
You don't read a novel, to try and defeat its author;
You read it, and try to vindicate the author
As you might just find they thought about it more than you do.