Can you picture bumping a string or cable with a broadhead? Your neighbor dry firing it? A cam, riser,limb cracking?
These things are machines, and they get used pretty hard under violent pressures and forces.
You've been lucky, as have most of us..........but get ready to head out the door and take a few practice shots only to have your one cable snap right before a hunt will have you wishing you could just reach back into the bow rack for bow #2.
It's a risk you take if you don't at least have SOME serviceable bow laying around that is ready to go. The slow fat kid on the end of the bench who doesn't hit very good ready to play at a moments notice!
I've never had a flat tire in my life on a road trip but you can bet your butt I have a good spare tire everytime I leave the house.