ARGUMENT
Keanu is secretly a robot
REBUTTAL
While the majority of people are at least able to see that Keanu behaves in a manner similar to that of a living object, some claim that he is, in fact, a robot.
Putting aside the resulting problems when it comes to wondering how exactly he then managed to conceive a child with his late ex-girlfriend - and if the governmental scientific organisations have knowledge on human-robot reproduction which they are craftily hiding from the populace - there are also other issues with this claim.
Firstly, all those various accidents which Keanu has got himself into over the course of his highly interesting lifetime spent largely on motorbikes. Among other things, he ruptured his spleen, injured his left ankle, and injured his spinal cord - resulting in a need for a medical procedure to insert a metal plate into his spine and cause him to go around with a neck brace for the first part of the Matrix shoot. Admittedly, 'metal plate' sounds suspiciously like a robot replacement part, but on the other hand, 'spleen' does not sound like something which roboticists usually put into their robots. And if the plate was a natural replacement, the neck brace wouldn't have been needed.
Secondly, behind-the-scenes evidence of special effects shoots for Bill & Ted's Bogus Journey: namely the parts in which Keanu played the evil robot Evil Ted. Why would they have blown so much cash in getting these sequences right and then shown us the process of how they made some supposedly human dude look like a robot, if he could have simply been himself? Doesn't make sense.
Whereupon you might point out that there are no levels that studios will not stoop to in order to look as though they need more money.
However, it happens to be that that film shoot was in fact scaled down from its far more expansive (and expensive) original vision. Which makes it look kind of contradictory. If they wanted to save cash, they would have saved all they could, right? Such as using a real robot in its original form, rather than making a robot that was really a robot trying to look like a human.
Then there is the casting for The Day the Earth Stood Still 2008 remake, where Keanu was casted not as Gort the robot, but as his bodacious alien pal Klaatu. Articles on TDTESS are full of accounts regarding the amount of time and effort that special effects people took in getting Gort to look just right, with thousands of potential designs and a huge amount of work spent in creating said being almost entirely on the computer.
Why bother, if they had a real life robot in their cast? Not to mention that they were kind of strapped for time, what with the film shoot coinciding with the Writer's Guild Strike and all.
And, in similar argument to why Keanu is not a tree, but perhaps with more relevance here - Keanu has been often spotted eating lots of food of the human variety. Sandwiches, steaks, coffee, wine, pasta; robots don't need food. They're not alive anyway.
It's possible that it's all just a show in order to hide his true identity, but then there's the question of where all that food goes. Too much food in his non-organic internal system would after a while start to smell. While this might have been some of the reason behind his supposedly unpleasant body odour which he was known for in the past, it is also important to note that said smell went away after a good shower, while the act of drinking water - which would have cleansed the metal bits inside of him - did nothing to help at all.
And then of course there's the problem of how exactly he then managed to conceive a child with his late ex-girlfriend, given that governmental scientific organisations don't have knowledge on human-robot reproduction which they are craftily hiding from the populace.
Conclusion: Keanu is not a robot.