You ignore the fact that what you call 'evidence' for alien presence earth is patchy at best, that what you call evidence can be explained in more mundane ways: that the ancients were far more capable than you give them credit for, that they were master stone masons and builders, that they had - as shown - the intelligence and the means with which to achieve the great works of antiquity.
So yes, the 'Von Danikan's' of the world appear to have created a faith based religion with aliens as their gods.
And that is the reason why you become defensive when your faith is being challenged.
