While I agree with your point about Vader, I always interpreted that poem ironically. IMO, Frost undermines what he says to justify the narrator’s decision in each of the first three stanzas, and then at the end, the narrator does not say that he thinks the road he chooses is actually the best, but that when he’s old he will want to say that to justify his life’s path. In case anyone wants to check it out…
Sigh. At 14 two of my best friends and I finagled a group date between us and three boys we had crushes on. We went to see a scary movie with exactly that thought in mind. At our post-date sleep-over we deluded ourselves into thinking it had been a grand success on all counts, but then none of us ever went out with those boys again. It was thenceforth considered a landmark fiasco of our youth.
Three years later I was starting to come out. A year after that one of the other girls started dating ladies. And then the third went gay in college and never looked back. Back then we blamed the fiasco on our teenaged awkwardness and dorkiness but there may have been other forces at work.
And now I can laugh about it, especially when I look back at our ticket stubs and the paragraph description that went into our scrapbook that year.