This generality that has me avoiding buying a new console is all of the complaints that I hear about PS3 and Wii's interfaces. For example, I did not know, until today, that the patches for PS3 games take a long enough time that you can go make a sandwich but something I did know is that they release a system update for the console every couple of months or so. These updates to the console are not quick and they are, of course, required to play online. To myself it just sounds like a lot of annoyances that could probably be streamlined. For the games they could put more fixes in a less frequent patching process and for the system updates they could do the same thing.
Perhaps Sony could take a page out of Microsoft's book and hype up their new features but thinking about it now they did that for the in game XMB and well... is anyone still talking about how great of a feature that is to have. Instead everyone is always complaining about the next problem (whatever it may be). This could be a testament to how many issues that the PS3 is not addressing correctly or it could be the Internet complaining about everything all of the time, as they like to do from time to time.
Seeing as the Wii has far more wrong with it than just its interface (though it is hard to update the interface if you do not have enough free space) alone it becomes hard to complain about any one thing. For example, the Wii Speak peripheral could seemingly allow you to chat with friends while playing any game but as far as I am aware one can only use it in the Wii Speak channel or in Animal Crossing. While I am not surprised, you could see how this would make sense to have in games that encourage folks to play together. For myself, at this point, I would like to just borrow someones Wii for a month or so and just play
In the end, I like the community that comes along with my Xbox and I know it is not going anywhere so I have nothing to worry about if I ever do pick up one of these other consoles.