Neg. Convexity

Hey guys, I’m reading up on neg convexity, and although I understand it, can someone please explain a circumstance in which you would want to buy a bond with neg. convexity.

Callable bonds as the price approaches the price at which it can be called.

All else equal, a callable bond will have a higher yield than a non callable bond - there’s a risk premium for writing the call option on the bond.