Self education is the best investment. I would spend half on traveling and half for education

Not a big problem, bitcoin will just change to another encrypting algorithm. Quantum Computing is not godlike technology and has it's limitations. not any algorithm could be easily cracked even by QC

Sounds too darmatic. As for me no one can takeover bitcoin by design

Just show them how to buy stuff with it and give some BTC.  that's enough )
Spending money of any kind is in women DNA )

Pokemon GO started like a real virus infecting people and media ) so if to add there bitcoin market it can help to promote bitcoin to people who would never be involved in bitcoin themselves. maybe BTC price will rise.

I have used BTC to pay for some online srvices and i even get salary in BTC ) some times i send money to my friends via BTC.
It's not that hard to explain bitcoin to people in that way how to use it. There are good and intuitive online wallets and no need to explain verbose technology standing behind bitcoin. so i just show how to get\send\check BTC and describe main benefits and risks compared to fiat.

Bitcoin is good enough to secure your money coz if you do everything right it can not be associated with you and no one can freeze your account... some times it's very useful feature 
But still it's volatile and you should compare risks storing your money in fiat or secure it in bitcoin. as for investment it is risky so you should not invest more then 15% of all your investments to BTC.