I personally thinks its pointless to upgrade the PS3, and also don't understand peoples hate for consoles.
I don't hate them but I prefer PC by miles. I see modern consoles as just constricted, weaker PC's. Not only do you have to rely on their networks for connectivity, but they keep getting more and more nazi-ish with their restrictions and due to the simple nature of consoles there is nothing you can do about it.
I have total appreciation for older consoles where the games were exclusive and completely different and unique from PC games in almost every way. While on console they had amazing games like Donkey Kong Country or any Mario game, PC had it's own niche of very different games coming out like Quake and Starcraft. There were lots of reasons for me to own a console up until about half-way through the PS2 life-cycle when the two worlds began to collide.
Now everything is cross-platform and I don't see any point to getting the inferior version of a game with no customization and a weaker control scheme, not to mention reliance on an exclusive source of online play. Now with these damn-near Tyrannical restrictions coming into play I see even less reason to own a console. PC is simply superior in every way, I can play virtually any game including console games old and new on one system. And since a lot of new games I want to play are also on PC I don't see much of a downside.
Plus as a guy that loves to Mod games, there is simply no alternative.
I was worried about the downfall of PC gaming but consoles are getting a shit-ton of flak these days too and a lot of developers are starting to put focus on the PC version of games again.