I'd like to kill thoes scrypt ASIC vendor.
Why? It makes no sense. The coins you have mined should go up in value as the blockchain becomes more secure.
So you should be happy that all the worthwhile scrypt coins can all become massively secure if you have been mining worthwhile scrypt coins.
The security of the blockchain is measured in the dollar cost to protect it not the network hashrate.
The arrival of ascis for scrypt doesn't necessarily make the the blockchain more secure. A malicious entity can now spend his dollars buying asics for an attack rather than buying gpus for an attack. If anything asics could temporarily weaken the blockchain if the first asic provider to hit big numbers sold a lot of them to a single entity. Hypothetical though and not important. What is important is the dollar cost concept.