I'm starting to find myself in this boat.
After you've played almost every classic B\W for the ten-thousandth time the "magic", nostalgia, or whatever you want to call it starts to wear off.
I'm thinking why would I buy something I've played thousands of times vs. I should probably get a new Stern because I can rediscover a game all over again.
It's a tough call but at this point I've owned or own all the classic games I would want to keep for the long term. Now, I just recycle the Stern's into one of their new releases and call it a day.