Well, let's look at both sides of this question:
No, my reaction is the same: If your reaction is the same as the speaker's, that indicates that you and the speaker have very similar values that contribute to your decision-making processes. The speaker values the second path because it is beautiful, which makes it appealing, but it is "grassy and wanted wear". He purposely chooses a path where fewer people walk because, to him, he cannot understand why two equally beautiful paths appear so differently used. The reader can understand from this decision that the speaker's choices in life are dictated not by what the people around him do but by what he believes is the right choice. However, it is important to note that he says "I kept the first for another day!" - the speaker does not disparage people who take the more commonly used path! He respects people with whom he does not agree, which is an important aspect of his personality.
Yes, my reaction is very different: If your reaction is very different from the speaker, that indicates that you and the speaker have different values that contribute to your decision-making processes. Firstly, if you choose the first path, it is most likely that you believe that there is probably a very good reason why people haven't been taking the other path. You trust the people around you and you allow them to influence you as you grow and experience the world to build your own knowledge base. Secondly, if you would choose the speaker's path but without the same feelings towards the first, you may not respect people who you feel are 'followers' or 'sheep' and do not make their own decisions.