He looks like a normal human being?
That was my takeaway, he came off as a regular guy understandibly still bitter at his dad spending his whole life drinking and whoring instead of being a dad. A lot of the children of addicts have the same look on their faces that David had, the "he's an asshole but he's my dad, whattya going to do" expression.
What really struck me is how Reid was a copy of Ric in every way both good and bad. Their relationship was a very Cat's in the Cradle cautionary tale, and I think that's part of what eats Ric up about it. Like if Reid had died in a car accident or something random, it wouldn't have been any less sad but at least there would be an aspect where it was just a freak occurance. Dying the way he did just jams it home how Ric was more of a party pal than a father.