Why do flowers contain more stamen than pistils

In certain flowering plants, the flower contain more stamen than pistil to increase chances of pollination. The stamen is the male reproductive part of a flower and the pistil is the female reproductive part of the flower. More stamen means more pollen. By producing more stamen and therefore more pollen, the chances of pollen coming into contact with the pistil are much higher especially since pollination depends on either wind or insects. However, not all flowering plants have this arrangement.