What is so appealing about 'bratty subs'? Is it so bad not to be one?

[thir]

I have a question, if I may... Is being bratty an act of topping the bottom?

Can be, if not a way that is accepted by both parties. For example, strangers being bratty to you in a club is trying to force your yo respond in a certain way.

But if it is something liked and accepted by any and all parties, it isn't. Then it is just a playful to do things, even a kind of flirt.