How long do you/should you play a ball?

I play my Titleist Pro V1X till it shows wear, hit a cart path and I take it out of play. Just seems to start looking like a range ball, otherwise 36 holes would be the max, I have beat it enough by then,

I only toss my Titleist ProV’s in the shag bag after a few scuffs or gouges develop..until then they stay in the tee it up pouch!