Many people in this world are always questioning this, what is a good business? Well, good business is a business that begins, rather than being questioned because the hard thing in doing business is to walk to the first ladder. If we do not start a single step, we will never get to the top. Just as with trading, or investing in cryptocurrency, without trying and starting investing in it, you will not know how much profit you get, and how much experience you will receive if the market is down. Remember that experience is the best teacher.
I agree to you and its like we will never know what is the results of our goals and objectives if we really not to give it a try specially if we are afraid for the outcome. Its like joining this investments in which many people don't want to join because they already concluded that this is a bubble or failure investment without trying it first. Therefore if some people have this kind of behavior then for sure the success will be difficult for them.