Communes are kind of like a chosen family. Instead of living with the bilogical family you can kind of pick the people you want to live with and share with. There are many advantages to communal living. Expenses are shared. So these communes live more cheaply than a single person.
People living in communes are freeer to travel.
For there are people always there to take care of the garden or water the plants and so on. Communal living is not as private as a home of your own. Sometimes there is a place set aside for those who require privacy. People who need a lot of privacy probably should not live in a commune. And for those who love people and interaction, communal living would be a very good idea.