"because we can" is obviously a very legitimate reason for something like a jailbreak :) But I am not sure if it answers my question completely, because we are talking about a site which a collects money because it seems like we can't at the moment. There's nothing wrong with that, but it shows that an iPhone jailbreak seems to be a high-priority task for many here and that's something which "because we can" does not fully explain (EDIT:) because nobody collects money for a better integration of android into the mac world so far, right?

Your argument about Mac integration seems valid, I did not think about it as I am no mac user :)