I don't have the answer to your question unfortunately other than to say I'm very much a contrarian and therefore believe at some point someone is likely (in my opinion) going to want to cash in at what I believe are over-inflated prices. Once the selloff commences and it will IMO, it's going to be one hell of a ride.
Sometimes it's prudent to expect the unexpected or put another way, be looking the opposite direction to most others so you don't get blindsided.