Purpose of cessation or Nirvana!

What is the purpose or cause of cessation or extinction or Nirvana. Did Buddha ever talk about it? For example, see how [SN 23.1](https://suttacentral.net/sn23.1/en/sujato) ends: > “But sir, what is the purpose of extinguishment?” > > “Your question goes too far, Rādha. You couldn’t figure out the limit of questions. For extinguishment is the culmination, destination, and end of the spiritual life.”