Job can develop various skills in specific field and allows to constantly work on improvement and development of new skills. Chance to have a job whilst studying abroad can provide door-opening opportunities and income which could enable enhanced experience of study abroad.
I have managed to find job in my first week of arrival in China, partially this is because of supply and demand. As more and more Chinese student learn English, they need more native English speakers to heal them learn the language. I had a role of teacher assistant and was mainly testing speaking ability of school kids. This part time role allowed me to meet new people such as academics and gain useful contacts in China.
Money can be main incentive when looking for a job however, it is important to look at broader spectrum of opportunities to which this job can lead to e.g. business opportunities, learning opportunities, career opportunities, friendship etc. If you have spare time in between studies and travel then definitely look into job with opportunities.