Mystery bundles... Why do I buy them?

same reason as me, the gamble... also its what... 65 cents each for 20 giveaways, minus maybe a couple that you decide to keep?

Our silly ape brain can't control itself at the thought of recieving something mysterious and amazing, even though most of the time we never get it.

for giving them away in the community train!

sounds like a more than valid reason to me ;D

I''d imagine for the same reasons as most people lol.

1) You're a Gambler.
2) Your key stock was low and the community train beckoned.

https://www.steamgifts.com/giveaway/gc2Nj/

"Mystery bundles... Why do I buy them?"

It's a... mystery?