Personally, I guess I'll try to buy up to 10 bitcoins and leave it with that.
That's about the amount of money I could lose without *losing* crucial parts of my savings for retirement (aimed at in less than 10 years... omg!) ,
but OTOH, if it helps to even maintain the actual purchasing power of my money till then, I'd be happy already.
If it continues to rise in value, - wow, I'd be extremely excited and for once in my life, wouldn't have had bad luck with investments (yes, that could be read as a warning sign for you guys out there!
)
Right now just worrying about imminent major wars or economical crises that destroy the US's economy as it is, because both scenarios would likely have an enourmous impact on the Internet structure and thus Bitcoin also.
cheers,
p.