One example of how necessary the sun is to butterflies can be seen in the monarch butterfly. They get their energy from the heat of the sun and thrive on plants the need photosynthesis to survive, both in the caterpillar phase and the butterfly phase. They are active during the day, and inactive at night.
And it is very rare if a butterfly decides to land on you.
Seeing a butterfly is a beautiful sight that lasts for only a fleeting minute until they move on to the next flower. Butterflies are flighty creatures, never staying in one place for very long.