system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5 , What are the pros of having mosquitoes on earth? what would happen if they all disappeared?
gpt
Not all mosquitoes bite, but eliminating all those that do, or at least the most common disease transmitting ones, is widely considered by researchers to be beneficial. Not only that, many researchers consider it an achievable long term goal. 
Their place in the ecosystem would probably be replaced other mosquito species.