It does matter if you cannot describe it in terms that are without contradiction.
There's a huge difference between "this is mysterious" and "this is a triangle with four angles"
If you would so lower yourself as to read up on the concept of the Trinity, even by reading the links I posted, you could set yourself straight on your imagined contradictions. The fact that some guy named Ron, on the internet, may have said one or two things that contradict is a very flimsy excuse for you to claim that the Trinity, or the incarnation, are contradictions. That would be like dismissing evolution, because my science teacher made a few mistakes in the presentation. As if it were his idea, and I couldn't get a clearer understanding from other sources.
In brief, the Bible does not teach three gods, but only one god. Nor does it teach that God is three persons, but only one person. It teaches one God, consisting of three equal, co-eternal Persons. To call that a contradiction assumes a whole lot more about divine ontology than we can claim to know. It's certainly not a logical contradiction. As for God being limitless, eternal, etc; but able also to limit one of Himself to human form (even as a zygote) - no contradiction, there, either.