I really hate it when I get too many compliments and I rarely give them. Nothing makes me cringe more than someone writing an email or a card thanking me profusely for something that they've already thanked me for and then telling me why I was so great, or whatever. A simple 'thank you' is more than enough for me.
Anything that overdoes it with words seems fake and awkward to me, and it puts me on the spot. I don't know how to respond to that and it makes me nauseous, actually. And then if I return a compliment, I often get "fished" for more by constant questions like "really, what do you mean? what did you like about it?" Blecch, that type of ego stroking... *shudder*
I often get cards in the mail from an NF friend of mine that I always try and pretend I didn't receive. I rarely open them anyway and usually just toss them (I hate clutter). I know it hurts her that I don't acknowledge them, but I am trying to get her to stop sending them - believe me, I've asked her to stop a few times already and she won't. I think it's less about the compliments and more about the amount and profuseness of it all. It's just overdone.
(and I'm not unbalanced, I just think that less is more...)