As you said, you really have to push yourself over your limits and if you succeed to put up a huge amount that you are likely never going to beat again, you are practically out of the niche.
It's a double edged sword. You want to push as far as you can, but if you succeed, your're out. No one wants to see 1.3 or 1.4 again after that. I did two or three 1.3's in one week, no one could care less.
As my personal record is pretty high and the support low, it's not the best motivational setting to give it all I have and then some.
I was very into it, but the strain on the body with the realization of how fast you are being let down if you don't go higher and higher put an end to it. You go all in, but if it stops at 1.5 (it's not like you can control it), you did it all in vain. And you can only do that so often.
Seeing as girls struggle to beat 1.3 (which I peed on my first attempt at volume), it would have been more exciting for everyone if I kept going up little by little. I didn't know that back then, I just went for it. It's not like you look at the jug and just stop at a given moment either.
Once you set a high mark, there is no going down.
So you are bound to constantly run out of girls who really go for it.
I remember when the current #1 on c4s went for extreme desperation for a custom. She wrote in the description right away that she's never going to do it again. I knew why.
There are a million things easier to do that sell more and most of the girls go for the sale.
One last thing I could mention while I am writing anyway: when you see the #1 pee clip being a "mega volume" clip, then a trusted customer tells you it was about 800ml, that's when you realize that you are done.
Maybe some food for thought. If you ever want to remember me, it's Sinna. Not Sanna, Sienna, Sierra or Sandra

That just aside.