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 
Yeah, those values are possible to attain however the only thing is we don't know exactly when. $100k seems possible in this year though if Bitcoin keeps growing, currently it is playing around $38k and it seems slightly recovering reaching $40k once again. Regardless, upon holding just make sure that you do set your exit point and don't be greedy. Besides, I don't think it will fall to zero, it may go fall in the floor but I don't think it will become zero unless no one using it which is impossible especially today that crypto is now becoming a thing.