The honest truth is that almost everyone will have the same exact experience in neovim as in vim, and that the differences right now (this could always change) are mostly for developers hoping to use vim in a creative way. For example, nvim has a decoupled back end, so ides could emulate vim without having to do emulation at all -- they would literally just communicate with the neovim backend. Another example, which I think is great, is that to support python extensions, nvim does not need to be recompiled. A third one, which is perhaps the least valuable but is also the most user-facing, is that you can now open terminals within neovim. Of course, you can do this with vim and tmux, but sometimes it's nice that I can set up a binding for <leader>-t to open a terminal, or <leader>-p to open an ipython shell instead of using tmux's more cumbersome default bindings. That said, there are of course ways to set up fantastic tmux bindings, I just haven't.

I love neovim, but the idea that "most people use nvim" or "vim is dying" is just wrong. Though I really do think nvim's development philosophy will lead to better results than Moolenaar's.