its just depression, sometimes there's no reason, you just get so sad, its like you just wanna lay around (like me) or in some more extreme cases, kill yourself to end the sadness.
If you , Dave, feel a different way, then i dont know, but thats how it is with me and my bro
STORY TIME! today i went to visit my friend rebecca. in short, i smashed a window with my fist, broke into a house, and had a long interesting talk about depression and everything like that.
I love my assumed-role of psychologist for teenagers. :D