The idea of going on a vacation alone seems a little intimidating at first. A person who can do all his work alone can also take a vacation by himself. But a person who does not enjoy living and spending time alone cannot take a vacation alone. In some cases it's a good idea to take a vacation alone. In some cases, it is beyond disgrace. This is entirely a matter of personality.
Not everyone can take a vacation alone, but some people enjoy vacationing alone more. Acting with the community, doing something organized is often not enjoyable.