Pair Programming Not Doing It Pain

What it is like to go from pair programming to not pair programming:

You waste time learning a new editor in a new company because your pair is not there to type exemplary keystrokes
Less motivation, pairs keep each other going
The category of bugs that you didn't even realize pairing was preventing -- they all reappear!
If you suffer from mental deficiencies (e.g., ADHD, Asperger's), you lose your train of thought, that MentalStateCalledFlow.