Some points here that need clarification.
First of all, we have never declared that blacks cease to be descendants of Cain, but that the restriction on them holding the Priesthood has been lifted.
Women cannot attain the highest order of celestial glory if they are single. HOWEVER circumstances do not always allow them to be married, and as we are also judged by the intents of our heart (IE what we would have done if we had the oppurtunity), all worthy single members will be found a partner.
Satan was trying to convince Eve that all she had to do to become a god was to eat of this fruit, which had been forbidden to them. The key here is disobedience. You will never attain any form of perfection by disobedience. If you pereserve and try to be perfect, you have the chance to become perfect. If you can do it, you won't be denied the benefits. Quite different to disobeying and trying to gain something by making no effort to achieve it.
The living Prophet recieves revelation that applies to us today. Not all revelations given 3000 years ago are applicable today, because the circumstances are not the same. Some things are not needful for us, some things are very specific to a certain circumstance, some things have been taken from the earth because of iniquity or disobedience. We are left with the things that are essential for our salvation.
We are also counseled to always read the scriptures and the teaching of the prophets, and to pray about things to know if they are true. We do not believe in ignorance whatsoever, and in fact will be held accountable if it was wilful. We also believe in the prophet, and that the moment he ceases to follow the word of the Lord, he will be removed. If you don't believe on the prophet, then why are you a member of the church. We are the wrong place if you re only prepared to believe in part of the truth. If you do believe, then there shouldn't be a problem. You are more than welcome to pray about it however.
We have ALWAYS said that we believe in the Bible ( the Book of Mormon is in ADDITION not as a replacement) and apart from belief in God the Father, belief in Jesus Christ is the most basic principle.
As for the picture of Jesus as a white man, the Middle-Eastern Semitic type may be darker than a northern-European, but it is not THAT dark. Drawing him as a European is artistic licence.
I would really appreciate it if people who wish to troll or spout abuse would not respond to this.
BTW blacks were not the only people enslaved in America. Indians were too, and I think, but can't be sure off-hand, that in the 17th c. there were even instances of whites (like prisoners or indentured servants).