Now, what, friend Sāriputta, is the pleasant, and what is the painful?

"Rebirth, friend, is painful; non-rebirth is pleasant. When, friend, there is rebirth, this pain is to be expected: cold and heat, hunger and thirst, excrement and urine, contact with fire, contact with punishment, contact with weapons, and anger caused by meeting and associating with relatives and friends. When, friend, there is rebirth, this pain is to be expected.

"When, friend, there is no rebirth, this pleasantness is to be expected: neither cold nor heat, neither hunger nor thirst, neither excrement nor urine, neither contact with fire, nor contact with punishment, nor contact with weapons, and no anger caused by meeting and associating with relatives and friends. When, friend, there is no rebirth, this pleasantness is to be expected."

~ Pathama Sukha Sutta, AN 10:65