Interesting points. Many eastern philosophies assert that the experiences are purely at the level of mind.
As per them, so long as the mind can segregate experiences as desirable and undesirable, it will continue to crave the desirable ones and reject undesirable ones.
If all the recent experiences are desirable, then there will be further segregation within the desirable ones till the undesirable bucket is again full (and vice versa).
This gels well with anecdotal experiences of craving for something like financial independence only to feel once some one gets it that it is either not sufficient or craving for the opposite happens.
So if we go by these theories, the center will never be reached. The pendulum shall just swing-by from one end to the other with the middle being really short lived.