Homeschool isn't only at home, though. My kids, and all of the other homeschooled kids I know are out at some activity, museum or educational "thing" at least twice a week. Depending on their age, they can also volunteer or work somewhere that interests them. For example, my oldest loves reading, so she volunteers at the library once a week, where she gets to meet people of all ages.

Also, it's much easier to travel when you're homeschooling. You can go pretty much anywhere anytime as you don't have to be back home before school starts. As an example, we recently came back from a year on our sailboat traveling up and down the US East coast and the Bahamas. My kids spoke a different language (we're not anglophone), tasted different foods, met people from all the places we saw, but also from all over the world (you tend to meet a lot of other travelers when you travel), saw incredibly diverse fauna and flora, made friends incredibly quickly, etc. How's that for a microcosm?

Homeschooling's biggest misconception is that it's at home, when in reality, it's wherever you are. It's like remote work for kids.