Whenever I eat sunflower seeds, I just eat the whole thing, shell and all. It's not particularly good for you, but it beats trying to crack open the shell, eat the seed, and then spit the seed mess out. I don't eat grapes with seeds because of this, although you aren't spitting anything but the seed out, trying to eat around it is a hassle at least for me, and it can be avoided by simply buying seedless grapes.
I just don't like splitting food out. It's gross.
What say you?