Some people think that because someone is a “loner” and in their “own world” that they are unhappy. This is not the case. There are many people who are very happy and very comfortable in their own skin, who have chosen to not deal with the day-to-day idiosyncrasies of life and the multitude of ignorant behavior in the world and are in search of a higher meaning and more profound relationships.
Do not criticize or ostracize friends or family, who are like this. It is not necessary for them to be surrounded by tons of people all the time. In Spanish there is a saying that goes, “Es mejor estar solo que mal acompañado. (It is better to be alone than in poor company.)