George Orwell doesn't appear to have hated Esperanto, though he seems to have feared the potential for abuse found in a universal language.
He was exposed to Esperanto through a friend of his aunt, Eugene Adam, who was, according to Robert Plank, "so enthusiastic about Esperanto that he did not willingly speak any other tongue." Plank continues:
“It's tough to make predictions, especially about the future.”
― Yogi Berra
My first thought when I saw your question was that there may well come a day when nobody is interested in Esperanto. That might be 100 years off. It might be 200. Who knows? When I saw that you said "30 years" - I think that's very simple. There will still be a lot of interest in ...
It seems to be based on personal experience. Here are several links that give some background:
And [a]pparently, Orwell, during his down-and-out phase in Paris, had to accept a room in the lodgings of a cousin. ...
Yes, Esperanto has been relatively stabile over the last decade and the small data I could find suggests that the demographic will not seriously change that.
A measure of the popularity of esperanto is the relative number of searches on google for esperanto.
The y-axis is the relative popularity of the search term esperanto divided by the relative ...
No sound statistics.
Esperanto has a community, also among the youth, also wide-spread.
It also has its own worth as a language one can acquire to a high degree.
It will certainly last for at least a century.
But for being a self-motivated Esperanto speaker one should seek a congress once a year or plan other activities.
So I think self-motivation is the ...