Many fungi are very useful to humans:
yeasts-- baking and brewing
antibiotics--- e.g. penicillin & cephalosporin
other drugs-- e.g. cyclosporin
many organic acids are commercially produced with fungi-- e.g. citric acid in Coke is produced by an Aspergillus
steroids and hormones--- e.g. the pill
certain “stinky” cheeses-- e.g. blue cheese, Roquefort and Camembert
Notes:
We can exploit many other kinds of fungi for industrial or commercial purposes.
See also “Fungi that are necessary for a merry Christmas” at <a href=“http://www.wisc.edu/botany/fungi/xmas.html “>http://www.wisc.edu/botany/fungi/xmas.html</a>