Here are some purposes and tasks of computers:
- Sending emails to other computers
- Setting up a business website to either get products sold more regionally, get new customers or people interested in the business... or just set up a general q & a to get helpful suggestions.
- Coding
- To use for the purpose of obtaining a more popular status
- As an educational tool
- To play games and set up various servers and custom mods
- And probably many more reasons as computers do multiple functions so there is many reasons for usage.