heheh love the way you come across as so matter of fact ...but yes that may very well be true, because afterall we simply dont know. However you do seem to have missed my point entirely.
First of all you're assuming that these incredibly evolved and ancient aliens who have traversed space for 500 or more million years and since mastered the laws of physics far beyond our current comprehension, would be resource limited and use things like money.
Secondly they may well have studied us and found us as compelling as us finding amoeba on Mars, obviously no one knows and this is all fiction as far as we know, but to assume that we are just far too incredibly special and worthwhile that these aliens MUST land on the Whitehouse lawn and say "hello earthlings" is silly. For all we know we could be one of countless life harboring planets that the far more advanced aliens are aware of but currently find nothing more than a curiosity and too primitive to communicate with.
I think it was Dr Michio Kaku who said something along the lines of; Aliens so far superior and evolved than us could see us in the same way we see ants. If they have evolved so far and learned and mastered the nature of the universe, then to us, these beings would be like gods (I refer to my previous post about humans only being here 200-100 thousand years, which in evolutionary and universe time scales is absolutely nothing) These aliens could simply be passing by, the earth could be like an Ant Hill next to the equivalent of a frequently used space motorway.
It is what I beleive. Im not stopping you from beleiving that there is intelligent life elsewhere and I'd be lying if I didnt find the thought of it exciting. I WANT to beleive in saucers and alien life but so far I just dont buy it.