There’s no single best way to see the world. The best way to see the world is the way that works best for you.
Some people love to travel solo. They relish the opportunity to explore new places at their own pace, without having to coordinate with anyone else. They relish the opportunity to meet new people and have new experiences.
Others prefer to travel with a group of friends or family. They enjoy the camaraderie and the safety in numbers. They enjoy being able to share their experiences with people who know them well.
Still others prefer to travel with a tour group. They like having everything planned for them and not having to worry about the logistics of travel. They like being able to focus on the experience and not having to worry about the details.
Whatever your preference, there is no wrong way to travel. The best way to see the world is the way that works best for you.