While I was at Starbucks doing some homework this housefly landed on my laptop and crawled around for a bit. Houseflies are found throughout the entire world and are seen as pests. They carry pathogens on their bodies and in their feces which can contaminate the things they land on. Houseflies have a relatively short lifespan, living only about 2-4 weeks on average.
https://www.inaturalist.org/observations/5947059