It’s in the news, we’re losing our bees worldwide.  The USA have lost 30% of their bee population in 2015 and Australia 24%.  Indonesia has similar numbers although the exact percentage is unknown.  Why?  Spraying indiscriminately against mosquitos, wild forest fires, the use of chemicals which can harm or kill them in our environment are all factors contributing to the depopulation.
In Bali, farmers have been found to complain about low yield of coffee, clove and fruit plantations for a few years, and seen crops decline with alarming results in 2016.    And bees are important to us humans:  they pollinate fruit and vegetables, and some say 1/3 of our food comes from their hard work.
No bees, no crops, no income, no food, not good.