@ Uyap: Please pay attention to Grammar when you ask a question. I was too late to catch and correct this one. I had corrected one of your posts previously. As a courtesy to others, we need to pay attention and formulate question topics and the text to be clear.
The short answer to your question is: Not knowing the law is not an excuse in a court-of-Law. In the same way, not knowing Nature’s laws (Buddha Dhamma) is not an excuse. This is the main reason that most living beings are trapped in the suffering-filled rebirth process.
There are some aeons where not a single Buddha is born. Each aeon is many billions of years. Even when a Buddha is born, his teachings do not last more than several thousand years, before they get distorted and then totally disappear. This is why we need to take advantage of our opportunity now.