In spite of my parents being my best enablers and almost loving me to death, I did eventually hit a bottom. Two more days and I will celebrate 18 years clean/sober.
My oldest daughter, now 30, has been actively using for 15 years. My parents finally got the big picture on the enabling thing, and let go of her several years ago.
She still hasn't gotten help. She's on probation again, has lost custody of her kids, moves from place to place to place, hasn't worked in over ten years.
So you see, you just never know what God has planned for any of us.
I know it's difficult, but try to have faith that a plan is unfolding for your son. :ghug3