Zoroaster was rejected everywhere he went, until he converted King Vishtaspa after curing his favourite horse. As religions gain ground, more and more people accept incredible claims, against all their normal everyday practice. However, if he had applied his wager to the articles of faith, he would have been wrong to say that we stand to lose nothing. Faith flies in the face of scientific method. Faith abandons everyday rules of thought and prudent risk.
Faith ignores normal requirements for evidence.
If we follow faith, we stand to lose a great deal. We abandon our reason, our logic, our nature as an enquiring and scientific species. First, we weaken reason by giving priority to emotion, hope or blind acceptance of authority. If we are ready to believe the unbelievable or the illogical in an important area of our lives, then we will be more ready to do so in other areas such as politics or the environment. If we teach our children to believe the unbelievable and the illogical, then we are actively training them in irrationality and blind acceptance of dogma, and they will apply that training to every sphere of life.