Haha, you are so right. Once, when I was explaining to one of my friends who's in nursing school with me what was going on, and how I was having mucus in my stools, she gave me a strange look and said "I don't think I'd even notice." And I thought to myself, "Oh, you would be surprised at what you notice about the oddest things..." People who are normal all the time just do NOT get it. When a stomach bug was going around (that thank God I didn't get...), another friend was complaining about really bad gas pains that went along with it. And she said "It was so weird, I had these gas pains, and they HURT. Like, it was painful..." And once again, I had to hold myself back from saying, "Oh, if you only knew - I experience that every day."
Illness of any kind really makes you appreciate normalcy, and the parts of your body that DO work right. You don't notice it, I don't think, until something actually DOESN'T work, and then it's like, well, at least my hormones are still in check, or at least I can still walk, or I can breathe and my heart is in good shape. It's a humbling thing.