I prefer clean-shaven, but I don't mind trimmed/patch or full bush in some cases (redheads). I try to add a little of all of these in my game since I know everyone has different tastes. Also sometimes you fall in love with a base model and it has hair already part of the model and you have no choice but to add something better to cover it up or look for a new model that you might not like as much.
It might have been interesting to know if people wouldn't care.
For me it depends on the LI.
Mostly smooth/clean-shaven but if it fits the theme/situation and it's not too much hair i guess it would be also ok.