Not sure where you got today's information from we have not went near 500 today. You can take a look here turn it to one day - http://www.coindesk.com/price/ But we have had a high of 583, low of 572, and currently are at around 577. So no where near 100 dollar range today.
I do agree keeping BTC long term hopefully can gain long term profit's. But today has been much different then you described.
Lol, sorry, I didn't want to say that. What I mean is that BTC reached to about $590 today, but one month ago was below $500. So who saved bitcoins on wallet since last month made a good profit until now.