But most believe the bitcoin to be best when considering many other offers. We see what other can't see in bitcoin, we trust bitcoin to improve standard of living, we keep buying for the project to survive threats. But we never ask what if the whole stuff varnish overnight?
Power of POW (proof of work). It is not centralized and the one who created it, his/their identity is still unknown. So even if you try, you can't make it vanish overnight. This is also the reason why Bitcoin is still at the top of the leaderboard. People still have faith in Bitcoin. Why should anyone have trust in something which is controlled by other entity and could be manipulated at any time?
Those who understand this concept, will always stay with bitcoin.
Either we want for it to stay or not. It will still exist. Because there will always be other people having trust in Bitcoin.