Heroic Yorsahj…I just don’t understand it

I have never been afraid of asking for help, and perhaps one of you out there can answer me this in a way that is helpful.

Mana voids.

It makes absolutely no sense to me whatso ever to keep the void up at all.

So, before everyone jumps in guns blazing, let’s start from the beginning.

The theory as I understand it is as follows:

Get it to 30/20%, then waste your cooldowns to regen some mana back to wait for another mana void to spawn so you can pop back up to full mana after it has sucked out the last vestiges of the small amount your regen got you back.

Right?

Explain to me how that is better than:

Mana void sucks your mana, pew pew to 0%, mana back, still have personal cooldowns for regen when actually needed?

Perhaps I am only looking at this from an arcane mage perspective being I require full mana to pump out any sort of DPS thanks to our class design, but it seems awfully stupid that I have to waste my cool downs to get my mana back and therefore stuff up my entire rotation because it will give me full mana later when I won’t actually be able to do anything with it since my mana regen will be on cool down anyway?

How was that for a circle of confusion?

Of course this is all on the basis that in a random fight, we don’t actually know if we will even get another blue quickly enough and may actually have to kill the first one anyway…so why not just spend the extra 15 seconds killing it in the first place?

I really just don’t understand how it makes it any better – and yes, more than 6 people have tried to explain it to me and so far no one has succeeded in even understanding what I am trying to say.  So it just goes around in circles. I have also read pages and pages and pages as to why it is better and I still don’t see why it is actually better?  Is this a case of someone said it once and then everyone followed and then now its the thing to do?

Are there any other guilds out there clearing H Yorsahj and actually killing the mana voids as they spawn?  Input…I would love some 🙂