My perception of moral attitudes has always been that it is better to be clear about your moral and ethical beliefs than to be so confused and trapped in grey areas. You don’t have to be terribly black and white all the time) in order to be possessed of the virtue of judgement and distinction (in fact, a black and white view can often be limiting and constrictive, though some situations to justify a black and white view of it), you can see shades of grey too, but you must not yourself become grey, and confused.
There is no room for doubt when it comes to your morality. Yes, doubt is a good catalyst for self-assessment, but it must not be taken as a permanent or ideal state. The virtue of clarity marks the strength of one’s own individually discerned moral code, philosophy, and system. You can’t be too fluid or else there is nothing solid, and you remain confused, thus the virtues of judgement and distinction cannot be fulfilled. Thus, internal clarity is a virtue, and remember not to let your will or your ability to exert it be compromised.