Gluttony might be innocuous were it not for the fact that gluttons tend to disregard whether their self-serving behaviors harm anyone else. We don't need to look far and wide to find examples of gluttonous behavior as they are numerous throughout the history of capitalism.
But what we can do as flawed as we are is still see God in other people and do our best to help them find their own grace. That's what I strive to do that's what I pray to do every day.