The only bad thing about the Wii is that the DVD drive could die (but that can happen with any optical drive anyway.....some lasers are better than others). Run everything via USB and the console is fine for years.
But yeah, the 360 and PS3 aren't the best......especially the earlier models
It's funny really, because I have a Blu-ray player that's running the same laser as the early PS3's and it's still running fine to this day.
I've played CD's DVD's and BD's in it (so I honestly haven't been trying to make it last longer).