We don't have a hundred biases, we have the wrong model
The rational actor model assumes that a person will behave optimally - using all information available to make and carry out the best decision possible for their goals.<p>I strongly suspect that a better model is that people instead of optimizing their outcomes instead optimize the ease of decision making while still getting an acceptable course of action. Most of our biases serve to either allow us to make decisions quicker or minimize the odds of catastrophically bad outcomes for our decisions, which fit nicely with this model. The fact is that indecision is often worse than a bad decision, and the evolutionary forces that shaped our brains are stochastic in nature and thus don't dock points for missed opportunities.