I have heard that even if you try to be good, the main missions force you to be bad. Is that immersion-breakingly bad or purposely done to activate your scruples so you may decide to break up with the gang in the main story and decide on a righteous path? My point is, if the main story doesn't allow you to be good, it would make little sense to be in side missions,(reply>), You are essentially an 'outlaw'. Depending how much of an asshole you want to be within that role is up to you!