If there is no such thing as infinity, then, where is the edge of space? What's on the other side? How did space get there? Where does matter come from? What's inside a black hole?
This is the cool thing about science - it's perfectly okay to say "I don't know," which is the answer to most of these questions. And it's impossible to find out.
It's too bad one is compelled to vote "I no smart," though. Because not knowing the answer has nothing to do with being smart or not (or being able to construct a grammatically correct sentence, either).
I say "I no smart" to my friends when they are talking about a topic that I don't understand. They think that it's funny.
Well, not really. In about 20,000 years, a probe we will send out will show us what's inside of a black hole. And, we can replenish our rocket fuel at certain places in the galaxy. Yes, we will be living the Star Wars life then. Yes.