From my experience, laptops "dying" have a lot to do with the usage characteristics of the owner. I've heard people complain sooo much about X and Y brand dying. But everyone that I know that has a laptop does not use/take care of them correctly.
For instance, I could come over to my friends apartment, with whom he lives with 3 other people. All of them have laptops because they're still in school. ALL of them, when not using their laptops, place them on the sofa, carpet, bed (on blanket), etc while still running. Let's think for a second. Most of these CPUs still run pretty hot, even though they throttle themselves and consume less power. Some desktops still overheat, if they are placed inside a cubby of a desk. What do you think will happen when you place your laptop on a bed and block your vents, and also insulating heat around your laptop?
My friend was tryign to get SP1 on his gf's laptop allllll day. I cam over and he was like, "Yeah, it's taking sooo long to load....etc etc." I look and it's placed on the fucking ground and touching the bottom side of the laptop actually hurted... I couldn't even put it on my lap. It ended up saying that SP1 could not be installed after 5-6 hours of being on. So I took his damn laptop and put it on the TABLE and ran the update again. It installed fine.
I would say that everybody that I know that has a laptop treats their laptop as if it's invincible. Then bitches when it breaks. I had a dell inspiron back in 2003 up until 2007. I sold it to buy a new one. It ran fine, and even the battery survived. I left it on and used it as a file server at one point in the dorms as well. I now have a T60. I expect to have that thing live forever, until I need a faster one or need a tablet(which is prob never)....
cliffs: don't melt your laptop.
Also, I'm not refuting that laptops can die without fault of the owner. But just like cars, a lot of the malfunctions have to do with ignorance by the owner.