Shell
Premium Platinum
Worst qualities can be a subjective term. I drink too much so that'd be a universally agreed upon bad quality. I am also a bit nitpicky with having a clean/tidy house. Annoys my girlfriend to no end, some would say it's a good quality to have.
As a fellow nitpicker, clean freak, I say this is an awesomely fantastic quality to have.
I mean whats the alternative... i crashed at my ex's place one time and his roommate was a ******* slob. There was this sponge in the sink... i cannot even begin to describe the smell to you. It was something from a different planet.