There are several million speakers, many new people learning it, more than a million right now on Duolingo, and it has between 200 and 2000 native speakers, several of them being my personal friends. It has pragmatic value in preparing you for speaking other languages and in having a network around the world you can fall back on wherever you are for hospitality and other services. Also it's simply worth on its own because you have real friendship around the world really easy and fast. My best friends are through Esperanto. Without Esperanto I wouldn't be speaking 11 languages now.