Agree with Bdgregory, NEVER, and the destination does not matter, just the journey...as a matter of fact, this hobby is a mirror of life itself: you always have enough because you always have more than the average human on earth but you never have enough because there is always something better or at least different out there...you can be content early and diversify your interest or you can always be chasing the Graal yet never invalidate the precedent choice, you can be happy never being fully satisfied or you can be unhappy to reach a state of satisfaction and then move on, you can change system when you are unhappy or you can work on improving your system when you feel it is becoming boring....but the ultimate system does not really exist and if it did, it would be very very sad and depressing. AMEN.