Can someone tell me whats wrong about hardfork?
From what i understand hardfork will less to splitting bitcoin to two versions: old wih 1 MB blocks and new BU or SegWit. Whats the problem with that?
And one more question - if i have 10 BTC, Whats gonna happen when there will be hardfork announced? How coins will be splitted into new and old version?
The thing that really counts that makes Bitcoin worth anything is trust and confidence.
A contentious fork, no matter whether that's one from the 'good' guys or the 'bad' guys shakes that quite significantly however you want to frame it. If something potentially unhealthy can be pushed through when many are unwilling that doesn't set a good precedent for future battles.
There may be many more controversies - privacy, changing the total amount, changing the block reward etc.
It doesn't really matter if an alt forks, that's just one of many. It does matter if the foundation of the entire scene can be wobbled in this way. Then again perhaps that's exactly what's needed to break out of this deadlock. It's getting old now.
And assuming both chains survived, you'd have the exact same amount of coins on both chains.