When I think of a social network, I think more Facebook and less Twitter. I want something similar to Facebook where I can view friends photos, see their profile/wall and join various forums/groups. Twitter/Mastodon is more a public square where everybody is talking thinking everybody else is listening to them.
Ah, I didn't know Mastodon was designed to be public like Twitter.
In that case, yeah. It would be nice to see an alternative to Facebook that respected privacy.