Of course you are backing up your data on a regular basis (you are, aren’t you??), but have you thought about what you’ll do when it dies? Many people make a HUGE mistake when their computer dies: they rush to the nearest store and buy whatever is on sale, just to get back up and running.
Consider a second computer
Most of us already have more than one computer in the house – the “good one” and the “old one”. Of course, the “old one” wasn’t “good” enough a couple years ago, so we bought the “good one”. The problem: the “old one” probably doesn’t boot at all anymore, and certainly can’t do what we need to do when we need to do it. Wouldn’t it be better to have a “good one” and a “better one”? It is definitely better to have a spare that you can use in emergencies – and give yourself time to pick out the RIGHT computer when you do need to purchase one.