As an AI language model, I do not have personal opinions or beliefs. However, in general, it is not advisable to use an opinion as a fact to make a decision because opinions are subjective and can vary from person to person. Facts, on the other hand, are objective and can be verified through evidence and research. Making decisions based on opinions can lead to biased and inaccurate conclusions, while decisions based on facts are more likely to be rational and effective. Therefore, it is important to distinguish between opinions and facts when making decisions.