"i understand your answers except #1. is it yes or no?"
Seems clear to me; Common sense should tell you that if God wants to destroy a people (1 Samuel 15:2-3), He doesn't need the help of men, whereas, if it is men who desire it, why not claim God commanded it?
You should also note that although it is claimed that all of the Amalekites were destroyed, except for Agag, they just keep cropping up!
1Sam:15:8: And he took Agag the king of the Amalekites alive, and utterly destroyed all the people with the edge of the sword.
1Sam:15:15: And Saul said, They have brought them from the Amalekites: for the people spared the best of the sheep and of the oxen, to sacrifice unto the LORD thy God; and the rest we have utterly destroyed.
1Sam:15:18: And the LORD sent thee on a journey, and said, Go and utterly destroy the sinners the Amalekites, and fight against them until they be consumed.
1Sam:15:20: And Saul said unto Samuel, Yea, I have obeyed the voice of the LORD, and have gone the way which the LORD sent me, and have brought Agag the king of Amalek, and have utterly destroyed the Amalekites.
1Sam:15:32: Then said Samuel, Bring ye hither to me Agag the king of the Amalekites. And Agag came unto him delicately. And Agag said, Surely the bitterness of death is past.
1Sam:27:8: And David and his men went up, and invaded the Geshurites, and the Gezrites, and the Amalekites: for those nations were of old the inhabitants of the land, as thou goest to Shur, even unto the land of Egypt.
1Sam:30:1: And it came to pass, when David and his men were come to Ziklag on the third day, that the Amalekites had invaded the south, and Ziklag, and smitten Ziklag, and burned it with fire;
1Sam:30:18: And David recovered all that the Amalekites had carried away: and David rescued his two wives.
2Sam:1:1: Now it came to pass after the death of Saul, when David was returned from the slaughter of the Amalekites, and David had abode two days in Ziklag;
1Chron:4:43: And they smote the rest of the Amalekites that were escaped, and dwelt there unto this day.
"does it seem to you that the posters here are christians?"
If God tells one to feed His sheep are you suggesting that I should avoid Christians?