Would you take your Mirage Griet to the Gym?

I wouldn't do it, but I have noticed this, as well. In kickboxing, there is this woman who would, without fail, come in, set her cabas down on the floor and gear up to throw punches!
 
I've seen people bring gucci to the gym just and set it in the area where you can hang your jackets etc. I was quite shocked. I would never bring an expensive bag to the gym. Cuz i know i would cry and be heartbroken if someone stole it.