I stopped explaining myself when I realized people only understand from their level of perception.
True. I find it is the same with most subjects, unless you hit upon a subject that the person you are with is passionate about, it doesn't take long for their eyes to glaze over. Idle chit chat seems to be acceptable, preferably short chit chat, at that. The long intimate discussions are saved only for the closest of friends, or maybe family, that are obligated to listen, at least for a little while.
Everyone sees things in their own way, derived from their life experiences. You may feel that you have the answer to life, but people only hear what they want to, or are ready to hear. So, something of great importance to you, may come across as trivial nonsense.
Don't worry if their level of perception isn't at the same level as yours. The fact is, it is only your perception, and although it may be truth to you, it is your understanding, not theirs. So explaining yourself to anyone, really, is a waste of time. It is perceived as a demand to understand your way of thinking and they may have no interest in that. No one likes to be told what to do or how to think.
You have your ideas, and you can do what you will with them, but you don't need to feel obliged to justify yourself to anyone. You don't need any validation; it is your life and you will live it to the best of your ability. No one really understands anyone else anyhow, and you are ahead of the game if you understand yourself.
"There are some people who could hear you speak a thousand words and still not understand you. And there are others who will understand without you speaking a word." Unknown