ATG for me is
Vanson leather jacket, pants, gloves
Combat touring boots
full face helmet
The only time I have not worn gear is when I ride around the parking lot after working on the bike. I wear my gear even in 100+ degree heat. I used to ride with only a jacket, helmet, gloves, boots 10 years ago when I first started riding. Once I started wearing the leather pants a year later I felt naked riding with out it. Even when I go to my martial arts class, which is five blocks away, I wear ATG.
If it has two wheels ride it.