In many places that they are planted, it is just for the purpose of shade (cover) from extreme hot weather, and since their thorns scare away some birds, and other animals, it serves also as a quiet and conducive environment for reading and meditation. For this reason, some people who fall in love with it's shade , aligned nets hanging around the leaves before the trunk to serve as a protective shield from its explosive mechanism from direct contact with person sitting under it (for a mature tree).