I traveled always with my tourmate, for a long time now, but I did meet lots of people on the way. Some are nice and some I just never want to see again( though that doesn`t work, they go to the same shows as I do).
Some will be friends for life and some are real disgusting or even enemy`s for the rest of your life. But you can go alone, we will always be there and believe me, most of the people you meet are friendly.