That being said (and I am fully aware that there is many nice people who will need to point out that this is totally un-true), all true Dominants I met in Real life have at some point in their life, or still do, submit to someone, and learned what it means to be on that end of spectrum.
lol Well it won't be me. I avoid arguments about what a "true" sub/dom/switch/whatever is like I avoid dogs with foam covered muzzles.