I think it sounds nicer if you are stating possible faults of the opposition (if you mean using 'we' in a debate).
"We all have problems here, there, and everywhere."
sounds much nicer than
"You have problems here, there, and everywhere."
But say that I didn't have problems at all, it would still be nicer to say the former than the latter, and I think it applies to other things much better than the example I have chosen.