We cannot really provide the best solution for our investment; however, it is enough to earn a profit and say " Yes my investment really is successful" and refer to other people.
I think not all of us make a better decision especially when we talk about money matters. The pressure "risk" and the financial concerns, as well as the existing problem, may alter the decisions that we have. Thus, we can`t forecast success on investment by merely having profit because it might end up to another bunch of investors to be trapped in an investment and eventually want a scapegoat even if the outcome would be a loss. Significantly, it will give discouragement to the other potential investors.
Thus, we should not be more confident about what we get because some people may not find the fit and would result in a greater impact of discouragement as a whole. In addition, even when the intention is good, but if the person lack of courage, patience, and aspiration then it would create a mistake; and a mistake of one individual may lead to an overall conclusive distraction.
No offense, but I read your post a few times and still couldn't decide what to make of it
If you want to say that our decisions, and especially the financial and investment ones, are not perfect and even far from just being somewhat optimal, then I agree with you. But it is so with any decisions we make in life. The difference is that financial and investment decisions are kind of irrevocable, you can't undo them. This is not always the case with other decisions we make which can often be undone with minor or no damage at all. Yes, you can eventually make up for the losses incurred due a wrong trade or investment gone awry, but that doesn't take anything from the fact that it was a wrong trade and your mistake (just an example). Further, investment and much more trading are a game against other players, some of which may have an indisputable edge over you. This also adds to how erroneous your calculations and expectations might turn out to be. The bottom line is that it is kind of normal (if losing money can be considered normal, of course)