If it's registered, you may be able to install it via download, provided you have the product key. I understand what you're saying about re-installing, because I've had to do it twice. The patch previous to the October 1st patch broke Origin so I had to reinstall everything, and early on something bugged and I had to re-install. Fortunately it doesn't take as long as it did with Sims 2 or 3, especially with expansion packs.
Of course, if you can live with it, then that's up to you. It would bug the boogers out of me! lol