Have a bow tech check it over, for wear, and bad pivots. If he suggests changing out a part, do it, don't chance it. Bows are built to the razor's edge of failure. (That is why dry-fires are dangerous).
As for it being game over if a compound string fails....that depends on you.
I had a compound cable start to part, I felt it go, and let off carefully. Had a bow tech restring it with new cable, with a modification. I had him add knocks for a standard bowstring inline. I can, (by design) compress the bow enough to swap out a frayed or broken bowstring in the field, with nothing more than some cordage and a stick. (It works, I've done it).
Age alone is not determining Factor, condition is.
I have been shooting the same Indian Stalker compound for 37 years.
