"1. How Did You Become an Atheist?"
I was lucky enough to have parents who never attempted to indoctrinate me in a religion as a kid. They didn't indoctrinate me in atheism either, and they didn't object when out of curiosity I asked to follow the religious education optional course one year in primary school: it left me profundly underwhelmed. My schoolteacher during my first three years nof primary school probably also played a role: she had us say the "Pater Noster" and "Ave Maria" four times a day (which as I understand it technically wasn't illegal due to the fact that unlike the rest of France, Alsace still operates under the Napoleonian Concordate since it was under German occupation at the time the Concordate was scrapped): being made to say things I didn't understand left me particularly annoyed and frustrated, and the teacher wouldn't explain; apparently, she never realized that I genuinely had no clue what a sinner was, for example (and to make things worse, in French it sounds a lot like "fisher")
"2. What happens when we die?"
Uh, we rot and become wormfood, unless we are cremated or hungry animals find our corpse first? I read that some people have the ashes of their loved ones turned into a diamond, but this is very uncommon.
Oh, you meant our "soul"? Well, you knowwhat happens to your OS and data when your computer's HD fries? Pretty much the same thing, as far as we can figure.
"3. What if you’re wrong? And there is a Heaven? And there is a HELL!"
Well, then I'd adjust my beliefs accordingly, I guess.
But what if YOU are wrong about the afterlife, and there is one, but it is the Egyptian one and you didn't study the Book of the Dead? Off into the gullet of the Great Devourer with you!
"4. Without God, where do you get your morality from?"
Empathy, ethics and reason.
"5. If there is no God, can we do what we want? Are we free to murder and rape? While good deeds are unrewarded?"
Well, physics, biology and the laws of society mean that some things remain impossible, unaided human flight for example.
Seriously, though, rampant rape and murder tend to be less than conducive to an orderly, well-functioning society, so societies tend to develop antobodies that come down pretty hard on rapists, thieves and murderers. You usually know said antibodies as cops. Plus, normal, decent, non-sociopathic people simply do not feel the need to harm other people, and they realize that it is in everybody's interest to have a working society.
BTW, are you aware that you kinda make it sound like the only reasons you are not raping and murdering is that you believe that you are monitored 24/7 by a celestial cop who will have you horribly tortured if you misbehave, and that you will get a nice reward if you obey his supposed rules and kiss his ass?
"6. If there is no god, how does your life have any meaning?"
If there is a god, what meaning is there in being one of the puppets in a puppet play where said god already knows how it will end?
This may be hard to grasp/believe for you, but people can find their own meaning for their life, or even live pretty well without some great big Meaning Of Life®.
"7. Where did the universe come from?"
Where did you god come from?
"8. What about miracles? What all the people who claim to have a connection with Jesus? What about those who claim to have seen saints or angels?"
Keyword: claim. Even assuming that the people making these claims are sincere, the human brain can do some pretty funky things, like convincing you that you have been abducted and anal-probed by aliens/demons/angels. As for miracles, strangely enough they never seem to happen where scientists can observe them.
"9. What’s your view of Dawkins, Hitchens and Harris?"
I'm not familiar enough with their works to have an actual view of them.
"10. If there is no God, then why does every society have a religion?"
If there is one true God, how comes every society has a different religion, if not several ones or several different versions of one religion? Unless this God is a trickster/troll...
Seriously, though, it isn't rocket science to realize that in primitive societies religion is a way to explain things and to legitimize the rules, customs and laws by claiming that they come from a supernatural power. In modern societies, religion(s) are the equivalent of vestigial organs, IMO.