Looking at the rapid growth the Croptocurrency world is experiencing right now, with new and promising Tokens (ONL, ATFS, BERRY etc) being introduced on regarly basis. I actually have a strong confidence that cryptocurrencies would get worldwide acceptance in the nearest future, and with Bitcoins topping the charts of all existing Bitcoins right now, Bitcoins stands to benefit from the newborn cryptos emerging. So if you ask me, I think it is quite impossible for Bitcoin to CRASH.
I am glad after reading all your statements; you ended it with the right answer to your question. I am sure this is not something that needs a lot of debate.
Bitcoin will always have a first movers advantage over any other cryptocurrency and if there is any other coin that can do it better, it has not been tested on a large scale like bitcoin, and it would not take a lot of time to get bitcoin protocol fine tune to do as much as that, so at the end, the winner as long as it keeps doing great, keeps winning.