The first time (actually, the ONLY time) that I had to send my wonderful machine in for repairs, I felt like I was missing a limb.
Strange how we get so attached to an inanimate object!
So I know how you feel!
In case you're wondering what wonderfully healthy machine I have... it's a 95-80 Singer Industrial machine from the 1930's. Only does straight-stitching, only goes forwards... but most of the maintenance I can do myself and it will surely outlive me!