Saving bitcoins for the future it's the best idea, if you can afford it then do it (at least try to save) and i hope that in the near future the price will be increased much more than it is now.
Absoletely not agreed
Blockchaintechnology within banks and companies is a matter of a few years, months even. Once that happens, all the sheeple follow and bitcoin will crash IMO, I hope not, but the little devil on my shoulder keeps shouting that it will 
Not necessary. These banks will need a currency to work on their blockchain. The common currency would be bitcoin. They do not need to convert currencies.