1) Satoshi Nakamoto owns a reported 1,000,000(1million) bitcoins. Does anyone else see the huge huge problem with this? If Satoshi's bitcoin wallet or addresses were hacked or taken control of by a relative, friend, or others and they decided to even sell a fraction of the coins, coupled with the already uncertain market, Bitcoin's price will plummet to less than $1 per coin. Honestly, Satoshi owning 1million bitcoins has doomed Bitcoin from the start. This is one of the Major reasons why so few legit organzations are out there accepting Bitcoin as a means of payment and another reason why most people looking at Bitcoin think of it as a ponzi scheme(which it is) or scam.
Yes, this is a bit of a problem, but it's not guaranteed it will turn out badly. It even can turn out good, read what I think Satoshi would do with his enormous wealth:
https://bitcointalksearch.org/topic/m.8840162 Also, fact Satoshi has so much coins does not make Bitcoin a ponzi scheme.
2) The Bitcoin Foundation, or the board representing Bitcoin, is full of illegal activity with dozens of former foundation members resigning from their positions this year. Charlie Shrem, a (former?) foundation member, has been invicted on April 10, 2014 on accusations of "operating an unlicensed money transmitting business, money laundering conspiracy and willfully failing to file suspicious activity reports with banking authorities". He was using Bitcoin to help users of the illegal drug marketplace, Silk Road, buy drugs with Bitcoin, as well as operating an unlicensed money transmitting business, (former) Bitinstant and Brock Pierce (current) foundation member, is an accused Child Molester.
I don't have problem with Charlie Shrem, I believe many other don't have too, even if he goes to jail. Fact Brock Pierce is accused pedophile has not much to do with Bitcoin.
3) Bitcoin is centralized. It is controlled by the mining pools. For instance, just a few months ago, Ghash.io caused quite a scare in which even Peter Todd, a core developer for Bitcoin, announced that he would be selling 51% of his Bitcoin's due to Ghash.io controlling and approaching 51% of Bitcoin's entire hashrate, which would easily allow them to commit a 51% attack on Bitcoin, thereby killing the currency by basically printing duplicate Bitcoins.
I don't believe that will happen in the future, network hash rate is already much bigger, besides, one owning more than 51% of hashrate does not have much incentive bringing the Bitcoin down.
4) The most damming evidence of Bitcoin's certain death as of right now(excluding Satoshi's huge 1million Bitcoin stash) however, is Willy. Willy was a bot used on the MtGox exchange from since back in 2012. Willy was illegaly using false fiat funds to buy large quantities of Bitcoin's every hour for days and months on end, which was what led to All of Bitcoin's previous bullruns, as well as dumps when Willy reversed the trend and started selling Bitcoins.
Basically, Bitcoin's entire price rise history and dumps, is due not to the traders, not to the news, but to a bot using fake money to buy bitcoins and sell them at a profit. Based upon that information, one can only guess that Bitcoin will never see a $1000+ price per coin again. http://willyreport.wordpress.com/2014/05/25/the-willy-report-proof-of-massive-fraudulent-trading-activity-at-mt-gox-and-how-it-has-affected-the-price-of-bitcoin/ Given how tiny Bitcoin is, compared to world economy, I say 1k USD is ridiculously cheap Bitcoin. See you in few years. Those are not good enough reasons to be that bearish. You're bearish primarily because desperation level is at ATH right now. Do you see all that investments, do you see queues in front of Bitcoin ATMs in next bullrun? Infrastructure is built right to support all of that. You haven't missed the train, but don't miss another one. Bull run will happen 2 years from now, the most.