Why is LAN advantageous?

Answer 1

Access to a LAN (a local-area network) is important for any networking, such as accessing the internet, sharing data with other computers in the same house, sharing a printer, and many other useful functions.

However, a computer can be perfectly useful without Internet or local network access. For example, you could still use it to create software, digital art, text documents, manage your digital photos or music collection, and many other tasks.