Write an English composition of 60-80 words about "Why tourism is so popular"

Tourism is a trip for entertainment, leisure or business. Tourism has become a popular global leisure activity. In 2008, the number of international tourists exceeded 922 million, an increase of 1.9% over 2007. In 2008, international tourism revenue increased to 944 billion dollars (642 billion euros), with a real increase of 1.8%.

In the past few decades, there has been a high-end trend in tourism, and short-term international travel is very common. Tourists have a high level of disposable income, considerable leisure time, good education and complex tastes. Now there is a demand for higher quality products, which has led to the split of the mass market for beach holidays; People want a more professional version, a quieter resort, a family-oriented holiday or a destination hotel for a niche market.

The development of technology and transportation infrastructure, such as jumbo jets, low-cost airlines and more convenient airports, has made many types of tourism more affordable. WHO estimates that as many as 500,000 people are on the plane at any one time. Lifestyle has also changed, such as people of retirement age traveling all the year round. Internet sales of tourism products provide convenience for this. Some websites have begun to provide dynamic packaging, in which the customized packaging requested by customers on impulse is quoted with price.