Sincere Questions for Calvinists

I have some questions.

1. Why would God plead with everyone to believe in Christ if nobody could receive Him?
2. If Jesus does not plead with anyone then what is the point of spreading the gospel to the world?
3. Why would Jesus die for all if nobody could be saved except those God causes to believe?
4. If Jesus didn't die for all then why are we to share the gospel with the world?
5. Isn't it misleading or false hope to give the gospel to those whom Jesus did not die for?
6. Is it wrong to not provide opportunity to salvation to everyone?
7. By assuming total depravity over propensity to sin, could you not enter into other fallacies such as presuming God does not die for all, does not plead with all, and does not give anyone the opportunity to be saved?
8. Is, therefore, the belief in calvinism possibly a sign of unsalvation because they don't want to be saved God's way in which God foreknows our free-choice?
9. Does a person belong in hell if he was born into sin and was not an opportunity to be saved?
10. Do you believe man due to the fall is no longer made in God's image with a spirit, soul and body?
11. Is it an assumption to assume you are regenerated without having to first repent to cross as a helpless sinner to receive the Lord Jesus as Savior by grace through faith?
12. If the god of calvinism can save everyone why doesn't he? (In contrast to the God of the Bible who saves anyone who would receive Him.)