It's not even that unmotivated, if you think about it.
Back then, Bitcoin was fighting for even the slightest chance at recognition, and even just awareness. A mainstream article was enough for that.
Next was merchant adoption. Took a while, but it looks like Bitcoin is on track in that respect. Makes sense, as well: there's a good, solid financial incentive for merchants to favor Bitcoin over legacy payment systems (assuming they put a processor like Bitpay in between).
Now that that one is settled, more merchant adoption (short of amazon.com) doesn't seem to move price up much anymore.
So, big question to the audience: what's the next "unresolved" question (as in: something that the market still reacts to)?
I have a hunch
Other than that, Bitcoin is IMO still searching for a "killer app". I don't know what future ones could be, but since Silk Road and SatoshiDice I haven't seen much that motivates people to use Bitcoin over fiat for transactions.
I bet with you that it needs no reason. If there will be any so called reason I think it's only a coincide. People are calling reasons like Cyprus, China etc... at best it has been a small push and after that it's all kinda mass psychology.
If we were rising now people were shouting GABI and PayPal is the reason.
It's a wave, nothing more.
You can see these small pushes even now. PayPal effected strong upwards momentum, but it couldn't stop ongoing wave.