I've just realised that the one I'm typing on right now is either 13 or 14 years old!
I dug it back out of the cupbaord because my 2 year old Chromebook died on me.
Yes it needs to be plugged in after about 2 hours, but it still WORKS and it's wifi is better than the chromebook even after all these years.
I'm begining to wonder if it will go on forever!