What kind of life defect is it that you have never traveled alone?

Personally, I think it will be a pity. Traveling is not a group of people or traveling together. Sometimes traveling alone will have a great influence on you, making you strong, broadening your horizons, being less lonely and changing you a lot. Life is only a few decades of cold and heat. In the limited years, we should seize the time, strive for the time, use the time, do more things that are beneficial to the social crowd, and prolong our life in time.