I play Angry Birds all the time, one of my favorite games. Have you looked at the reviews? If you've only played once, you have absolutely no idea how challenging and addicting that game can get. So, you know, thanks for being insulting. You know, what you find "childish" and boring is what others find fun and relaxing, and what you find important is what others find incredibly dull. (I'd hate to see what you think of Osmos if you find Angry Birds lame.)
You make the Ipad what you want it to be. Like much of life, if you hit a wall, it is either going to be an impenetrable obstacle or something to overcome. Maybe it's a cliche, but it's true. I don't find myself frustrated by anything but the lack of multitasking (using the Iphone 4 everyday illustrates the need for that on the Ipad) and when something hasn't worked the way I expected, I have either found a different way of doing it, or I just opted to not do it on the Ipad. It's not an "everything machine" and I don't care if it is. I don't know why everyone is so focused on making it be "everything." Use it to relax and NOT do that stuff on - do the fun stuff on your Ipad, the boring stuff on the boring computer.