Mosquitos cause disease, including malaria the most deadly disease on earth, and annoying itching welts and make an annoying sound in your ear. Flies spread disease, keep you from napping, and are generally gross. Wasps kill about 60-80 people per year in the US alone. Moths destroy cloth items and are gross as hell. Fleas also spread disease and they annoy cute puppies. Roaches spread disease and are gross as health. Termites cause great property damage. Ticks are painful and spread diseases Crickets are pleasant from a distance but are annoying in your house or tent. Spiders eat all the pests mentioned above, but they are condemned because they have too many eyeballs and legs.