Why are a lot of people incapable of holding a conversation?

QuestionMan
I guess there's no Social Relationships category anymore so I'm putting it here.

Anyways, what I've noticed is a lot of people when I talk to them the conversation ends within 5 minutes because they never have anything to say other than the cliche responses.

For example:
Me: Sup
Person: Nothing much
Me: Hey did you see [insert random topic here]?
Person: No
Me: What do you think of penguins? I think they are pretty cool
Person: Yeah they are pretty cool

The conversation just ends because the other person never engages in the conversation or tries to make it interesting by bringing up one of their interests.

There are a few awesome people out there with whom I can start talking about Avatar the Last Airbender (or any other topic) with and end talking about Greek food (or any other ropic) 2 hours later.

Why is that?
Updates
+1 y
@Cmasterson and @MissNowhere I'd like your input
Why are a lot of people incapable of holding a conversation?
7 Opinion