My reason is totally not from investing standpoint. Since i mentioned there's some strange issue with paypal on some places i used to buy accs from, I started looking into bitcoin.
Found a few places that lets me trade BTC with paypal, and they ended up costing alot. So i made up some strange theory why it suddenly jumped, because there might be alot more other type of service people want to buy but paypal or the likes is shutting them down and people have no choice but to buy bitcoins.
My theory is probably way off.
As for mining, i'm sure you guys have seen this
I did some calculation as i was really interested in it, even wanting to buy off some of the specialty mining rigs. Until i realized, every day the dificulty rises, and the moment you bought the rigs that gives mega hashes, the next day someone sells giga hashes. So I would have to sell these off like in a month or 2 for a double hash rate every time.