Boeing 737 FCTM:
Touch and Go Landing - General
Accomplish the pattern and approach procedures as illustrated. The landing gear may remain extended throughout the maneuver for brake cooling, but be prepared to retract the landing gear if an actual engine failure occurs during go-around.
Are you saying what Boeing recommends is reckless and violates certification data?
Do you think the aircraft "knows" the difference between if it's doing a takeoff or doing patterns?