Many predicts bitcoin will reach 100K, 160K even 200K and more. but no one say what happen then? what happen when reach for example 100K? will be stable, fall to zero, continue with correction or raise more? what is your suggestion 
The increments in bitcoin is based on the marketcap of all cryptocurrency so bitcoin getting to hundred thousand, is very obvious that it will not take place today, so suggesting that when it increase to a certain point and it will definitely return to zero I think it's a fallacy, since existence of btc it never fall to zero, like now btc reached to forty thousand (40,000) this year but now is within thirty thousand (30,000) which we assuming that if btc fall it will get to previous price ten thousands (10,000).