the short answer is no, no there is no chance it vanishes. if anything it could begin to pick up in daily volume and popularity because it has such low fees compared to most of the big coins out there. i would venture to say the most widely adopted coins to date as far as being used to transfer value between individuals are BTC, ETH, BCH, LTC, and XMR.  personally i occasionally purchase hashing power at mining rig rentals dot com. i have found that out of the three coins they accept payment in (BTC/LTC/ETH) the one which gives me the most bang for my buck is consistently LTC because i lose significantly less on transaction fees than either of the others. so as long as this is the case i would venture that LTC has a bright future. not only that but the development team behind LTC has, in my opinion, always been one of the best and most active teams who are really vested in the successful adoption of their coin.