A large insect on the outside of your visor will be gone the instant you take off from the stop light. Not to worry; just ignore it.
A large insect that splats on your visor while you’re moving irks you, but you can factor it out and look around it (tip: don’t try to wipe it off. A splat is less distracting than a long yellow smear.)
However, a small insect inside your visor will speed around endlessly, like that stupid kid Billy in “Family Circus.” Don’t bother to lift the visor in the hopes of blowing it out; it doesn’t work. It will make you cross-eyed and drive you crazy until you pull over, flip up your visor, and mash it.
I’d never make it as a Buddhist.