It is a question many wonder if aliens exist at all or whether they would visit us if they did.
With no factual knowledge about any alien lifeforms and/or civilizations, we human beings are left with speculation on such matters.
These speculations can often have a human element making them less applicable on the universal level. This human element is undesirable and - at least in the basic level - a flaw in the argument being made. An example of such an assumption is that because we breath, then aliens must also breath.
But we often fail to realize that we ourselves are aliens – not aliens to ourselves, of course, but to all other, unearthly life. In this regard, it is possible to study alien life by studying ourselves, as an example or a case study, and as long as we can bet on the assumption of alien life being similar to our own.
Instead of answering the original question, then, we could ask the following question: Would we ever visit alien civilizations? The answer, I argue, is no.
Consider why in the first place would we embark on a space trip. It would be a very interesting project to send a spaceship to the moons of Saturn to study their geology more closely. At the same time, it would be a huge waste of effort, money and resources to send that same ship to study their orbits. Because we understand and can simulate gravity from here on earth, we do not need to go physically to the moons of Saturn. In fact, we do not need to go physically anywhere in the universe to study its gravity, saving stupendous amounts of physical
Yet, there is nothing inherently different about gravity and geology – gravity just seems to be easier to figure out and simulate for us. In an alternative universe, it could have been the case that we knew the geology of the moons of Saturn by simulation and solving equations from here on earth, while having to send a spaceship physically there to study their orbits.
Imagining an advanced human civilization, and given that a simulation of a space visit is much cheaper, time efficient and useful than an actual visit, we can safely say that such civilization would never need to visit another life form.
This is not universally true. In case you are traveling to gather resources, a simulation is not enough.
As long as we can bet on alien life being similar to our own, or that we can prove that this human scenario is also the scenario for alien lifeforms, aliens will not need to visit us but instead they will simulate us on their computers and will simulate themselves visiting us, if they so wish.