I hate to be without mine. Last year when I took it in it was gone for a month (the repair guy went on vacation and had to order a part!). The good thing was I did get a quilt hand quilted in that time.
If it ain't broke, don't fix it!
I do have 3 older machines (both my grandma's and my mom's) that I should have checked out so I can use them as well or as backups!