Human body is most difficult to achieve

durlabho mānuṣo deho
dehināḿ kṣaṇa-bhańguraḥ
tatrāpi durlabhaḿ manye
vaikuṇṭha-priya-darśanam

For the conditioned souls, the human body is most difficult to achieve, and it can be lost at any moment. But I think that even those who have achieved human life rarely gain the association of pure devotees, who are dear to the Lord of Vaikuṇṭha.

SB 11.2.29