As you said only those things have value that human beings decide to give value. Life is the most valuable thing in this universe and there have been times in history when a loaf of bread have costed more than a life.
So even as the crypto markets continue there bear run and the media shouts that the bitcoin has ended - the truth of the matter is that it has just begun. This phenomenon is unstoppable not just because of the idea but the people willing to believe in that idea. In my understanding there is a core group of people willing to stand behind this idea and we need to decide if we are a part of it. As for me I consider myself a part of the idea.
Not only will we see the prices rising (that is only a secondary thing) but we will actually see mass adoption in the coming decades. But the thing to remember is that this is a long term game and to be successful patience and perseverance would be the key.