Scalability and de facto centralization was always going to be the slow death of Bitcoin,from the size of the blockchain, ASIC miners (which locked out people who couldn't afford to build warehouses of them, creating a centralized market of people who can actually mine coins) and transaction fee. Its too soon now to say that Bitcoin is dying but it certainly will at the current rate, when? Who knows but it's got pretty severe design flaws that I think weren't properly considered in development.