I agree Zardari isn't saint, but you wont find saints in politics. The point is continuity of the system w/o interruption & army marching back into politics. We can't afford that.
If he was just "corrupt" it might have been okay/acceptable as all of our current lot is corrupt to some extent but this guy is a criminal. He is responsible for few murders and money extortion (using shoe-bomb). PPP should be held responsible (after Musharraf) as to why they let him steal the leadership of the party and later on nominate him for the presidency.