As a former flight attendant I have to agree with the title of this post.
Get your coffee or tea in the terminal at Starbucks or the local restaurant in the terminal.
It is more costly than free coffee/tea you can get on the plane but it is so much better and healthier too.
Why should you avoid the coffee or tea on the plane?
Well most crew members know. But for the rest of you, Travel & Leisure just did a story on this that you need to read.