I never really noticed it until I brushed it back one day and noticed how much thicker it looked when the part was only a couple of inches in. Then I forgot about it until I saw Angie's party suit formula and really liked her broken part. I know we have a similar hair texture, so seeing her "seamless" hair intrigued me. But I think my hair is too long for that.
I usually part my hair far off on the side in the front, and then angle it so it ends up closer to the center in the back (I think that's what you mean by asymmetrical). If I go all the way to the middle, it makes it very flat in the back. I'm really bound to what my hair wants to do naturally, which means I can't part it too dramatically or I get hair in my face, nor can I part it too much to the center, or it looks flat. It's trickier than you would think.
I also noticed that changing the part makes it look fuller, but it's only temporary. Once my hair gets used to the new side, it will settle down, so it doesn't seem worth the awkwardness. I have these super annoying baby hairs at my hairline, so I try to part my hair in a way that conceals them but it never works! It's part of the reason I have always felt compelled to have bangs, whether I actually liked them or not.
Yes, I probably do think about this more than anyone else...but isn't that always the case?!