Islaam isn't a religion which is inherited, but it is the religion which God revealed to mankind to help them leave from the depths of darkness into the light of truth, the truth of this world and the hereafter.
The final Messenger of God, Muhammad (peace be upon him) called to the worship and obedience of our Creator Alone, the same call of all the Prophets of earlier times. Believe that there is none worthy of worship except your Creator and you will be successful, that was the call of the Prophets of God. They warned us of a day when mankind would return and be gathered to their Lord and be judged on all that they did in this world - those who obeyed the messengers would be rewarded a great reward, whereas those who rejected would be punished a severe punishment. Because God created us for no purpose except for His obedience, so we could be thankful to Him for all the good that He has bestowed us. Imagine the little things that if you never had them, you wouldn't be who you are today. Imagine God removed your sight, your hearing, would you really be in this position you are right now in?
Indeed your Lord has said that if you be greatful to Him, He will bestow upon you more good. But if you turn away and be of the arrogant, then know that your Lord is Self-Sufficient, and He will judge us all on what we differ. But in the end the victory is for those who follow the guidance of God's messengers, the true path. Who is better than the one who follows the light, down a clear road - compared to the one who wanders in the darkness with no guidance?
The final Messenger of God was and is Muhammad (peace be upon him.) He never ordered us to worship him, nor did he fight people because of his own personal desire. Infact when he was the king of arabia he was of the poorest of people. He gave his wealth to the needy, and if you were to walk into his house, you wouldn't even be able to stand up straight because the roof was low. The man who was the king of arabia never even had a meal which would satisfy ones hunger, he would pray at night while fasting throughout the day. The one who gave up the life of luxury for the sake of pleasing his Lord, to help the needy, the orphans, the travellers. He was the greatest man to ever live, Muhammad - the servant and final messenger of God Almighty.
Michael Hart in 'The 100, A Ranking of the Most Influential Persons In History,' New York, 1978.
My choice of Muhammad to lead the list of the world’s most influential persons may surprise some readers and may be questioned by others, but he was the only man in history who was supremely successful on both the secular and religious level. ...It is probable that the relative influence of Muhammad on Islam has been larger than the combined influence of Jesus Christ and St. Paul on Christianity. ...It is this unparalleled combination of secular and religious influence which I feel entitles Muhammad to be considered the most influential single figure in human history.
http://www.islamicboard.com/prophet-...uhammad-s.html
The issue of slaves has been discussed here, and if you are sincerely interested - then you should read it:
http://www.load-islam.com/artical_de...Misconceptions
Islaam never introduced slavery, infact islaam is one of the reasons why slavery has been abolished in the world today.
Regards.