system
Given the following post, respond as if you're commenting on Reddit:
human
What is responsible for some people being lonely or socially isolated despite humans being social animals?

What are differences from normal humans that make someone vulnerable to be socially isolated or left alone?
gpt
Not an expert, but asking a clarifying question:  Do you mean what leads some people to be excluded from the groups in which they might otherwise participate, or do you mean why do some people prefer to not be a member of groups?