http://wwf.panda.org/about_our_earth/species/problems/human_animal_conflict/

How would you react to an elephant in your backyard or a bear in your garden?

summary

it is because human can not control their want. they always want what their want and do not think about animlas around them. so they cut down trees and burn the forest. they make animals do not have a place for shelter.so when animals do not have place to shelter animals try to find their place and find food so they can go to village or plantation that make people who have the farm feel harm. 

some people who can control their emotional would think that they won't make animals lose their place to live, because they would think if they do not disturb animals place, animals won't disturb their place or farm. but some people can not control their self so they do not think the impact what they have if they always disturb animals. when some people try to protect the forest because they do not want their place be disturbed, then they feel disadvantage because of people who always disturb the animals.

my opinion is if you do not want your place disturb by animals so you do not have disturb them to. because they need place and food at the forest. when you burn the forest and they do not have place to find their food so they are trying to find food at your place and it would be disturb you.