As we journey, none of us have a complete view of our surroundings. Learning what others are noticing and experiencing brings greater insight and adds texture and contour to what we can see.
And travelling with others may present new paths you never noticed...and destinations you didn't know existed.
Not to mention that travelling together brings greater enjoyment, adventure, and opportunities for deeper connection with people, our surroundings, and ourselves.
Isn't this the real purpose of our journey (if there is a purpose).