The thing about the ill-effects being minimal... I actually sorta doubt that will be the case. If you're a loner, yes, but I believe the final plans are for Loner-ing to be a lot more deadly because of the risks of...well...loneliness. And if you are intereacting with an NPC group then those traits are just going to make everybody hate you, which could potentially be fatal. "Not quite enough food for everyone? Ah well, Mr RageMood, better luck tomorrow..."