Depending on what day of the week it is and what time of the month it is I'm a good friend or not a good friend. I'm more or less a good mom or not a good mom more or less a good mate or not a good mate. That's just life whether or not you're public.
Probably nothing serious or worthwhile can be accomplished without one's willingness to be alone for sustained periods of time which is not to say that one must live alone obsessively.