Travel can be done in group or solo depending on the purpose of that travel. Traveling in groups is fun and saves cost and also helps one catch all the adventures of life. On the other hand, solo travel isn't bad, just like you mentioned, when you need to clear your head, you go solo.

Yes, there comes a time or moment in a man's life that he needs to think, and plan his life, then one needs to go solo at that time. I love the view of you and ypur friends in that boat. Success to you!