This has several advantages:
- You can record to a MIDI Control device to keep track of pitch bends, so you don’t need to worry about “stuck” bends when you move around.
- You can automate a completely different parameter using pitch bend wheel, such as panning.
- Pitch bend messages have higher resolution than CC messages. For those very sensitive parameters this can be significant.
- This goes hand in hand with another suggestion: See Disable snap-to-grid when recording automation