I know people that love it, but my experience has been that it usually feels like an inefficient use of time. I mostly agree with https://matt-rickard.com/against-pair-programming/ on the same site, especially this bit: 'For existing employees, pairs are often stuck at the speed of the least senior pair.'

It has a few powerful but niche use cases, particularly around mentorship (where I think asynchronous feedback is often too little, too late) and when two people are doing work that's closely intertwined.