Śrī Caitanya Mahāprabhu is the most benevolent personality in human society because His only desire is to make people happy. His saṅkīrtana movement is especially meant for the purpose of making people happy. He wanted to become the tree Himself because a tree is supposed to be the most benevolent living entity. In the following verse, which is from Śrīmad-Bhāgavatam (10.22.33), Kṛṣṇa Himself highly praised the existence of a tree.