Your right it obviously is not just bots but to be honest them and the whales do play a major part in keeping the price low and the manipulation of rising the price when they have accumulated enough at the lower levels which they are happy with.

I think people losing interest has a part to play also as well as big mining farms dumping every coin they have on the market without as much new money coming into the game. Once we have more new money that can buy up all mined coins plus more then we see a nice rise again.