I have been through immersive hobbies all my life, a small part of each still manifests itself at times. Antiques, furniture, wooden boats, guitar building/repair, dozens of others. I have learned so much about pinball that now there are very few machines I would actually consider pursuing. In any hobby you become refined where you know what is good, what is not and the Ultimate. The latter becomes a sort of Grail, it keeps your interest piqued but its elusive.
So kept 3 machines, 2 EM and an SS. My Family playing them Christmas day was worth their rent, but it will probably be another year before before that happens again.
So keep one or two Players around and move on. Take care.