maybe end of 2015 bitcoin dead

Not this soon. Bitcoin is just going through some issues that are not so huge to worry about. They will fade away soon. Bitcoin is gonna be here for a long time. Bitcoin has a lot of flaws right now, I agree but it is not long when these problems will be over sooon.
There will always be issues, no matter what. We can overcome them all with ease if we work together. For now people realized (Greek crisis greatly help) that bitcoin a cure. Bitcoin price over $300! At least.
Long live bitcoin!