The coffee plant is one of the most heavily sprayed crops. It's coated with chemicals, pesticides, and herbicides, nothing you'd want to be ingesting. If you do drink coffee, make sure that it's the organic variety, free from assorted chemicals that leech into our ground water and can make us sick down the road.
If you switch to decaffeinated coffee, make sure the caffeine is removed in a natural way without the use of chemicals to do it. Often times, conventional decaffeinated coffee has more chemicals that regular.