If you have to take your best guess, when do you think that the socialist revolution will happen in the USA? Please explain the reasoning behind your guess.
In January 1917, Lenin thought the revolution would not happen in his lifetime. Conditions were very different then, but it's a good reminder that life is unpredictable.
We of the older generation may not live to see the decisive battles of this coming revolution. But I can, I believe, express the confident hope that the youth which is working so splendidly in the socialist movement of Switzerland, and of the whole world, will be fortunate enough not only to fight, but also to win, in the coming proletarian revolution.
I was mostly very realistic in this thread, but if you want to be optimistic, in Lenin's time the Social Democratic parties of Europe actually where some of the most important hubs for communist youth to start to crystallize their radical ideology into something distinct from social democracy. This same phenomenon happened half a century ago in the Students for a Democratic Society movement, though not much material change came from it. There's no specific reason it can't happen with the Social Democratic movements of today except their relative powerlessness in the west.