I can tell you why for a sport I fallow: cycling. Most find it that it is not a team sport, and those are ignorant, and this is a mistake.
Why I find it different? Reasons:
When you see half a million men and women on a mountain and along the road to see them pass for mere thirty seconds is astonishing. And doing so for three whole weeks.
When you see that every single of those half million are supports and fans of anyone who passes, the first, the last, the enemy, the Japanese, the German, the American, the Russian and so on, is amazing.
When you see that a guy from the public gives a bottle of fresh water to one cyclist in the fugitive group, and he handle's it to everybody of the competitors which are not his team mates, is fantastic.
When you see endless kilometers of mountain road and cyclists who climb it with such enthusiasm and such a desire and such a suffering, and battling each other is flabbergasting.
When you know there is rarely a favorite for the public is great.
When you see a cyclist with broken bones going on in spite of it, is breath taking.
I do fallow other sports but none such as I do fallow cycling. So I cannot say nothing for other sports for I'm ignorant in them.