On one side ecotourism is a good possibility to help other countries in their economic development. New jobs are created and wildlife habitats get protected.
Firstly ecotourism can contribute to a country economic development. Most countries can't compete with others in specific areas and are reliant to tourism. For example Germany exports tons of technical goods to every country in the world. Third world countries aren't able to compete with those so they need a different kind of income through tourism.
In addition there is the possibility of creating new jobs through ecotourism. The visitors need advice and direction. Nobody knows a place better than locals, even a studied tourist guide can't show every wonderful place in town. Poor fisherman for example can increase their income by guiding traveler through their well known town and reveal secret places.
Finally there is the protection of wildlife habitats and their precious residents. Rare animals need to be protected and this is only guaranteed by making more money with their presence rather than their fur. For example tourist pay a big load of money to see dangerous animals and feel the rush of meeting those. This provides the habitats to exist on.
On the other hand