For those asking why I am thinking about setting up my own Mastodon instance: it's because I would like to have a permanent identity linked to a domain I control, as opposed to being on a specific random instance I might want to leave later, thereby losing my identity/established network.
@buzz I suspect that in practice this would be like setting up your own NNTP server: in return for the benefit of a 'permanent' identity you end up having to accept near-infinite streams of federated toots, forever.
@peterb Mastodon really needs a better approach to identity.