LOL, I know what you mean.
Dont get me wrong I love my BBags, I have 2 Citys (and my name down for another!) and a clutch.
I also have 2 Chanel Flaps.
The Balenciagas seem to suit my lifestyle so well, and I love them, functional and edgy, and I find that recently I feel the need for shoulder bags again.
I am not saying dont sell your Chanel, just be a little mindfull that you may not achieve a great price for your it, and well basically, when its gone , its gone!
If you are happy to sell then great, BBags do seem to age well, and mine are turning into the silky leather I always wanted.