Greg Farris wrote:
There is another reason to use 10° flaps - training.
Many students are not learning to fly a 172, but using a 172 to learn to fly
airplanes. If you are anticipating transitioning up ASAP (as in career
oriented students) it's good to get into the habit, because your next
airplane may require flaps on takeoff, and the one after that certainly will.

Cherokee Six calls for minimum 10-degrees flaps for all takeoffs.
If you try a no-flaps takeoff, your takeoff roll is significantly longer.