2016, people still trying to make bitcoin clone that better than bitcoin, it's very fun to spectate for the "bitcoin killers", they failing everytime but still trying.
do u mean ethereum? actually btc is no.1, now and always. other coins dont have the chance to surpass btc.
Yes other coins always make bitcoin stronger.I see it good for bitcoin whenever a new coin is introduced.Bitcoin is the mother of all coins and it only grows in popularity with entire crypto market progress