Yes, very cruel.  All for $$$$$

"and will instead begin a breeding career where her foals could fetch millions if put up for sale."

Real reason for retirement ?  Turn her into a foal-maker.  😐

Whether she wants to or not.  She probably wants a big rest and not be interrupted by randy males.  As we all do when we've worked hard for a while.

horse racing is pointless. 

When black caviar discovers a cure for cancer, I'll celebrate. 

I also don't like horse racing and am sad that after working so hard she will now become a breeding machine.  Poor bugger will probably pump out million dollar foal after million dollar foal until she drops dead from exhaustion.

Sorry but had to laugh when I read this... yep... I know.. you gonna all send me to hell for it... 

Feminist Strike Again... 

Black Caviar RETIRES from RACING, after winning 25 out of 25 Group 1 races

her owners are castigated for 'wasting her on breeding' and "being cruel" to a female horse... 

Seems to me she (and her owners) are teaching Human Females a lesson in how to do it right ~ set yourself up as a winner, then BREED winners to follow you!