Another way to look at it is that its something to pass on when you're not around. I think the accuracy is a non-issue to be honest that's not what your paying for.
I personally don't wear a watch unless I'm traveling somewhere or have appointments to keep, even then its just a cheap swatch.
My father on the other hand wears his Rolex every now and then although to look at him you would never believe it was real!
I say go for it if you fancy one, It'll always be worth money if you ever want to sell it on which is not the case with even good quality £100 watches, my swatch was worth £0 as soon as I took it out of the box.
ATB