Immortalness is the ultimate goal..

Any one who wants the answer about lives after death must search for immortality or in other word have some curiosity about immortal life. In some cases mortality wipes out major problems but people who do not care about problems but wants to earn immortality should believe about ism such as religions can do better for them. If every thing can copy and past in new machine then we got a real solution about immortality because I hope our body is only a biological machine which is comparable with new smart machines. If man can build new body and past old memories then there should be no death actually happens for any man.

one life is enough

If DNA can copy every thing of life and live after death is the fact,  which is eternal life then one life is enough. So it has no use to think about rebirth or like that concepts are a fake and useless.

Why other people feel Islam is dangerous ?

Islam prohibits some issues that modern people like to do such as music, in Islamic view music has nothing to do good but occupy people's brains with unnecessary feelings, people can easily live with out music.The next thing is only an oath can't do,  people hate to give hard proofs such as examination can reveal how much you learned and took seriously from the teachings, pass or fail is not a matter but people are serious about results. Using all physical and mental issues for good purpose is really hard to practice but Islam will not allow you to do them in even subtle distorted way. In Islamic way you should improve day by day with out trying hard, your family and society along with a nation can make all issues as simple as weather pour anything all over the world. So living in Islamic society is the full proof formula for human beings but people afraid to do so because there rigorous punishment available for doing wrong willingly. 

Islam is hard to grasp

Islam is the only religion which is hard to grasp because they only talk about live after death. They sure pretend and saying this worldly life is just an example of life after death, and everything in this world is sure examples to guess and be preparation of that life. Allah will not allow ill minded people in heaven or polished creation should rest in peace. So first criteria to get in heaven is believing Allah almighty made this and other universe exist and let man to reign over other lives and necessary intelligence to overcome all difficulties lies on it. Prophets are only the messengers who are advertising lives after death and they are trustworthy.

People who observes this world as science depicts should overwhelm about their claim because they can't prove it as science can. As science can't prove all matters with solid proof but people's rationality makes it guessable so why the questions and answers received world wide and human beings using those with honor.
But no prophets tried their best to proof all they are claiming they just practice on their life and some miracles help them to establish facts as their will and claiming those issues as the help from Allah. Yet people feel they fully occupied with so much uncertenities to consider and solve they have nothing but rely on religious sayings. But hard part of Islam is people's faith should be examined by harsh reality, such as when you are in difficulties and you know the solution some worldly methods can do but wait for Allah to help and firm faith about your wrong doings will put you in hell as well as boost that problem after some time.

Your obidiance on prophets and rules they practiced in daily live is the easier answer but the hard part of this is not guessable easily. Some rationality will not allow you to believe that they did the best and you should follow him with out questions, after some experiences harsh reality comes in believing them as you believe your eyes or ears as well as your reasoning could be wrong but prophets actions are right and trustworthy.