Quite often you see people saying “tourists need to go home” or “we need less tourists” and there are some valid issues with how people can be, but overall, having tourists is a good thing. It shows that the middle class actually has means of traveling. It also tends to stimulate a local economy with additional revenue and can offset taxes for locals through hotel and other tourism fees. Those that do travel also tend to develop a broader world view then being in their own little sphere.
A reduction in tourism means that only the rich will end up traveling, and everyone else will be stuck only in the place they’re born, relegated mainly to pictures and videos “of a far off land” and will foster deeper divides of “well that’s just them over there” instead of getting to experience it firsthand.
The problem is usually that the tourism economy isn’t a great economy to be a part of.
Most tourist economies rely on a large staff of low wage workers to provide services. This may be a worse economic deal than other economies, even if the other industries in the area are in decline. Most locals who make money when tourism takes off are usually land owners.
You also run into a problem where local amenities end up getting used more by tourists instead of locals. So, while costs of living rise, locals experience a degredation of service.