I know my title is a lazy reference to a scene from the Monty Python movie The Life of Brian, but I think it is appropriate given all the recent talk about the decline of insects around the world. Does it matter if all the insects disappear?
Many (most?) people only notice insects when those insects are affecting them directly and in a negative way, e.g. stinging them, biting them, annoying them with buzzing, or chewing on one of their beloved plants (like the Grapevine moth Phalaenoides glycinae larva below).