Contrary to popular belief, these space beings do so much more than probing. Sure people get hung up on the probing, mainly because that's what they do most often. Lets face it, most people wouldn't find that enjoyable and I'm sure the only people to come out with that info probably liked it.
I'm sure I read somewhere that once probed there's no going back. Not very sure just what type of magazine I read that in though so it may be unrelated.
There are so many things these beings are capable of such as, showing humanity the ways of technology, unleashing unexplainable beasts onto our lands, causing a newer phenomenon to occur across the globe (strange Sci-fi noises from the atomosphere), curing celebrities of otherwise fatal illnesses without a cure, etc..... I could keep going but I think you got it.
Aha! You seem to know a lot about them pesky 's Do you a secretly work at Area 51?