system
Given the following post, respond as if you're commenting on Reddit:
human
[Beyblade] What are beyblades? What's the big deal about them?

I have seen the first anime, Metal Fusion, and Burst on-and-off yet I still don't get it. 

Are beyblade living creatures or not? Why is it such a huge sport? Why does no one over 18 seem to play it?

In the original anime it felt like beyblading as an up-and-coming sport but the other anime make it seem way more important. Everyone is obsessed with it and it's very serious business.

I am pretty sure some bey's have spirits in them, but do all of them do?
gpt
IIRC, Beyblades are pieces of a meteor infused with a soul. Or at least, the faces are. 

I think Metal Fusion has a few examples of fake, soul-less Beys. 

Doji (user of Dark Wolf) is most likely over 18 in Metal Fusion, by the way.