How do you know the guy doesn't have a life?
There is no mention of his name anywhere (as far as I know), for all you it could be Robbie Williams or Bruce Willis.
Seriously, saying that someone is sad is a slippery slope, for all you know the guy could be 28 married, have children but just be a tech junkie.
Honestly, some people love hi fi gear, spend 500 pounds on that (for cables, or speakers only), others spend god knows how much on their care stero, others spend it on tropical fish, others watches.
I am not saying I would do it, I wouldn't, but to judge someone over the internet when you have know info on them other than one setup they chose to show the world, from a tiny corner of their home, is a bit holier than thou.
It is even more ironic, that the people making these comments are those hanging out on an internet forum, who I would assume all love PC's, probably read quite a bit about them, and spend their money on their "habbit".
I don't mean to seem like a jerk in the post, and I am not saying the guy is "right" or "wrong" to spend it on that setup, but he isn't hurting me or anyone else, and so it is better he does that for what he enjoys that taking drugs, or whatever else.