Why risk holidaying on an infested planet with loads of people who stare at a small rectangular object in their hands all day and would probably end up torturing and dissect them given half a chance.
Anything that had the intelligence and ability to get all the way out to us would probably not be looking for a quiet picnic spot...
Former Canadian defence minister Paul Hellyer has a lot to say about aliens. He says there are different kinds - I suppose there would be - and one kind would want to be here for "sport"... One of the reasons the general public can't be told about them is because we like to tell ourselves we would have the advantage, and we are the scary ones. Perhaps Hellyer is not well, perhaps he's an attention seeker, but it's entertaining to watch videos on this stuff if you're bored!