cannard: But
why is it pointless?
I thought you just said you don't care? If you didn't I'd be glad to run it down for you in a few bullet-points, basically:
Some bundles, usually fixed-priced ones, are sold as individual licenses. Basically, you buy a bunch of individual games from them and you can do whatever you want with them - even resell the keys. Bundle Stars would be one example of that.
However, then there's another kind of bundle, like HIB, where you choose your price. Most of the time, this price is not actually worth all the games in the bundle (not by a long shot, especially given how much of your payment goes towards charity), and more importantly, it doesn't pay for them on all the distribution platforms you get the key for - so they're sold to you as a single entity. They're not a bunch of games, they're a single bundle - that's why HIB doesn't want you to split the bundles.
Now, for the legality bit:
When you buy the game, you agree with HIB's terms and conditions. That's for the legality bit, really - you agree that you will not split your keys and that you will keep them for your own needs.
And the morality part?
Let's just say that when purchasing from HIB, HIB actually entrusts you with the keys - they trust you, their customer, that you will keep your end of the deal and will only use the keys for your own, personal benefit. That's unheard of, isn't it? Well... It's unheard of because customers tend to abuse this trust. Very easily proven by people who are very aware of this license agreement, still redistributing the keys. There's really no way you can spin this to make it moral - HIB literally tells you 'here are the keys, and we are not going to make any precautions to limit you in their use because that would limit you, our customer'
See? That's a show of respect. Now if your response is 'Oh I don't care', you are sending out the message that bundles which do limit their customers (like those with a set minimal price that don't support charity whatsoever) are much better off.