It's not Calvin's limited atonement. It's Christ's . If Christ died for a man, and paid for his sins, that man has been saved. It's not that difficult to understand. Not one drop of Christ's blood was wasted. It atoned for every sin God wished it to atone for.
And a stone of stumbling, and a rock of offence, even to them which stumble at the word, being disobedient: whereunto also they were apppointed." -- 1 Peter 2:7-8"Unto you therefore which believe he is precious: but unto them which be disobedient, the stone which the builders disallowed, the same is made the head of the corner,
If God wanted all men to be saved, all men would be saved.
And your corollary is: God wants some men to go to hell - nothing personal, mind you, just for His pleasure.
A hateful god indeed.
Really. But what of your post:
Believe on the Lord Jesus Christ, and thou shalt be saved.
I foresee your answer will remove man and free will from the equation. Still, the choice of reply is yours to make.