It depends on your use case. The overhead is much smaller than you probably think and the Erlang / Elixir programming model works extremely well for some cases,

It depends on your use case. The overhead is much smaller than you probably think and the Erlang / Elixir programming model works extremely well for some cases, networking for example. I've been writing pieces for a Bittorrent client in Elixir. Using a process for every connection to another client or for every torrent makes structuring your code really easy.