What caused you to obtain all those titles in the first place? My guess would be the variety of themes and layouts. . . but at the end of three balls per game it will always be pinball.
Variety is the spice of life (or so "they" have said), perhaps you need to spice things up a bit with a new or related add on hobby.
I jumped from restoring tractors to remodeling a house (more of an obligation than choice) to restoring a camper for the wife to restoring a car to working on pinball machines. . . each jump included learning something new but benefitted from what I had learned from past projects. Combine that with all the day to day work/chores and the candle gets burned from both ends rather quickly. . . but right now I would not have it any other way. I have an issue with sitting still for more than like five minutes.
I think I am maturing in my relationship with pinball as well as I'd like to get my collection first down to ten games then eventually five or so. I am getting to a point in life where I want to start travelling again. . . pinball will always be a part of things but it will be a slice of the pie when it comes to my interests. I still have tractors. I still have cars. I just do not have as many as I once did.
(Still have the house and wife still has her camper -- selling any of those off is not really an option!)