Why don't the pirates care about Bill's gold and silver in Treasure Island?

In "Treasure Island," the pirates, particularly Long John Silver, are primarily focused on obtaining the treasure map rather than Bill's gold and silver. They believe that the treasure hidden on the island will yield far more wealth than any amount Bill might possess. Additionally, Silver and his crew are motivated by their desire for adventure and the promise of riches, viewing the map as their ticket to a greater fortune. Ultimately, Bill's wealth is insignificant compared to the potential treasure awaiting them.