Is traveling a want or a need? Well, that depends on how you want to live and what you prioritize in life. If you believe that the most important thing in life is to visit family and friends abroad, discover new things, and see many different places while experience different cultures, then yes, traveling is a need. However, if you believe that what you need is just basic things to make sure you survive such as things like food, water and shelter, then no, traveling is not a need for you. Cutting down on expenses and pollution can always be good, but if it's how you want to live your life, then do it! Some people may be willing to give up basic needs to be able to enjoy what they think is most important in life. Prioritizing also has to do with your living conditions and your financial status. If you have good living conditions and financial status, then you may claim that materialistic things are part of your needs, while others with poor living conditions and bad financial status may strongly disagree. Moreover, some may argue that non of these are their needs. All they need may be just love either by parents, family, friends or a partner. They would be willing to give up all they have for that particular person or group of people. So, really, there's no an actual how-to guide on whether something is a want or need. It all depends on what you want to prioritize, because after all it is your life. Cutting on expenses and air pollution is obviously preferred, but if you have really decided that is not what you want, then no one can physically force you to do it.