After a tree gets too old or starts visibly deteriorating due to certain circumstances, there really are few other options than to hire a professional to remove it. However, while arborist do mostly remove trees, there are other services that could also be considered, and other ways that the issue may be tackled. Of course, should the other options fail, the tree can still be removed and the problem will be solved either way.
Source: http://alterblogging.altervista.org/how-many-steps-are-there-to-tree-removal/