for me both frustration (that i have not invested) and amazed from the value today and back then. i think its neccesarry to check the history and act upon it.
i remmember back time that i just deposit and didnt give a fuck about the money there and just forget it. it was pennies and i didnt even gamble with it. now i just log in to few sites and find out that i have hundrens of dollars i wasnt aware of! it great.
Bitcoin have a huge value now of 2700$ and i don't see it going any higher (not on a astronomic way atleast) i don't see it goes X10 or X20 higher like it used to be before. it doesn't make sense.
on the other hand i can see Altcoin get a X10 20 and even X200 higher.
last year altcoins such as Ethereum and Dash were very less. and look now.. it's the time to invest in altcoin IMO