questions

I made a clan but it seems pointless, I can't store/ get money from tressuary like I thought so is it a money drain?

Yes, its a one way system :-)

The clan needs a treasury only to pay its daily taxes. Its a way to automatically clean up old, abandoned clans.

It's*

Sorry, I couldn't help myself.

Yep, as Jans mentioned, the treasury only works one way. Clans are about community and competition.

point of clan => participation in the energy race