There is an absence of the engine kill switch and ABS in hornet. Would it lower the count of performance in the engine of the bike? (and) What is the use of this engine kill switch in a motorcycle?

@SVP There is an absence of the engine kill switch and ABS in hornet. Would it lower the count of performance in the engine of the bike? (and) What is the use of this engine kill switch in a motorcycle?

Question asked from: http://www.carandbike.com/honda-bikes/cb-hornet-160r