Beautifully written poem. It's about never giving up on the life that we dream of. Mr. Stevenson may have felt that all of his friends gave up on their dreams and left him alone, to bear the weight of freedom, but they may not have been dreaming of doing adventurous things for the rest of their life. I know exactly how he feels. We all tend to think that those doing things differently than ourselves are for the worse, but they may think the same of us. The road less travelled may lead to paradise, but the price we pay is loneliness.
The hardest part about love is knowing what you want. Do you want someone, or do you want something that you think they can give? If you want someone, then you have to follow them. If you want something from them, then there is the chance that you could get it on your own.