Something to ponder about when thinking if one should stay or go is the Blockchain technology itself, not only Bitcoin. The Blockchain tech is even bigger than Bitcoin, I think, and it could easily reach bigger proportions than the coin itself (although if it does, the coin will go through the roof too, probably, as both are tied together)
Summing it all up, it's time to stay
Great analogy about Apple. The tech can do more than we can currently imagine.
The blockchain is the key invention of satoshi. Bitcoin as a currency is just the first blockchain "app". Many more apps will come
Blockchain tech will change the world.
Fortunes will be made with those that come up with great ideas how how to utilize the blockchain in new and innovative ways.
Bitcoin could fair for some yet unknown reason and the blockchain would remain.
I still think it is more likely that not that bitcoin will eventually fail (and be replaced by something else) but not in the short run. I still think BTC is a good investment at these prices despite that statement because the potential returns if it becomes a major world currency completely dwarf the loss if it fails. Attractive risk/reward if you ask me so long as you do not invest more than you can afford to lose