No, don't worry, you're not sounding like those people. They tend not to have -anything- to say about it.
And yeah, your advice is sound. I've taken it from myself as well; believe me, I'm able to see the learning aspect of it. But, suffice it to say, when one experiences a breakup of this caliber (not like my friends, some of whom act like it's the end of the world when the girl they've dated for 2 weeks lets them gently down; mine lasted for 8 months and my entire reality/worldview/future plans were pretty much shattered) it makes it hard to appreciate the positive side of things.
It doesn't necessarily make it hard to realize the positive side, or to focus on it, but it takes away the ability one usually has for truly feeling better after having considered the bright side. To be perfectly honest, this is one of the only bad experiences I've ever had in my life where it hurt me so profoundly that I can truthfully say I would rather forfeit the learning, however important or helpful this knowledge is, simply to erase the experience from my memory.