text: why is it that insects are attracted to light?   many insects orient their lives with the position of the sun, such as bees.  some insects are attracted by the heat that some incandescent bulbs produce at night (infrared radiation).   to really answer this question, you need to focus on an insect group or species.  they are so diverse.  fireflies use light as a means to attract and find mates, for example.   the bottom line may just be as simple as saying -> you have to be a "bug" to know for sure!