The biggest problem that I see with bitcoin is that by design, it is a deflationary currency.
That's not a problem with bitcoin. On the contrary, Bitcoin's deflationary design is the SOLUTION to the deadly problem of inflationary fiat scrip.Due to all of the above factors, I personally believe that bitcoin will inevitably completely implode if it doesn't fade into obscurity first.
Bitcoin is a lottery ticket for its holders. 
Lottery tickets never fade into obscurity. 
Also, you should use less emoticons when conversing with adults. Overusing emoticons makes you look stupid and insecure.
