LAN provides the domestic IP address, which cannot connect directly to the Internet, only using NAT or proxy to communicate with the public network.So, the first reason to commit to LAN is confidential. That’s why LAN is more preferred for small network building because of security.
LAN is the network that we recommend for home use because of the scale.
Devices in LAN network will use an IP address to connect with another internet, and it’s easier to keep the files among devices of the same system.
And the same IP address is more convenient to manage, in general.