How did I know you'd bring up the 100K prophets? Oh well I will entertain you. First of all, bringing up a verse from your Holy book is no proof at all. I've only heard the Ahmadiyya sect recognize Buddha as a Prophet. Lets say Hinduism and Buddhism have originated due to messages from Allah. Why stop there. The Greek Hercules has somewhat of a similar story to Jesus, so must also be the work of Allah? Heck Hades might be Shaytaan, as Lord of the Underworld. How about the Viking religion as well? Valhalla is where their warrior martyrs end up, sounds like a similar version of Jannah.
What you're really saying is Allah went back to the drawing board 124000 times because his word kept getting corrupted. That's a bummer man. In my opinion a truly All-Powerful All-Wise God would find the most efficient means of relay his message. The results of his last try (Islam) has 1.6 billion adherents out of a total human population of 7 billion. That's 22%. A failure by any measure, especially after 1400 years where there are still humans on this planet who have never heard of Islam.
Also there's the fact that the Quran was not compiled and standardized in book form until after the messenger Muhammad's death. It took a 20 year process for the Caliphs to get that job done. Where was God's foresight? This was his last shot? Of course I believe all religions to be the work of man, so "God" has no blame here.
I don't have to do anything to win over the hearts of Muslims on this site, anyone who wishes to learn the truth behind Islam can just open the Quran and Hadiths and start there. Try to make sense of it for yourself. I happily know where I stand.
The story of Jesus in the Christian scriptures are tampered with. The Romans are largely responsible for adulterating the original story with mythologies.
From some of the things you've made mention of, I can tell you've watched "Zeitgeist" and are pretty much regurgitating the same nonsense on there.
I never said that Hinduism, Buddhism, etc are religions that were definitely revealed by Allah (SWT). Majority of the religions have common beliefs, this could prove that Allah (SWT) has sent messengers to all nations.
That fact that 22% of the 7 billion world population are Muslims does not indicate failure whatsoever. We believe that if an individual or a group of people have never received the message of Islam, they won't be subject to punishment. The idea of God sending messengers in succession is not a sign of his incompetence. We believe that this life is a test, we've been given free will and its upon us do use it for the good. Have we not been given the ability to murder even innocent people? We believe one who does so will be brought to account. Likewise for those who have corrupted the scriptures of Allah (SWT), their fate awaits.
Allah (SWT) has not promised to protect the scriptures of old, there is nothing that indicates such thing. Allah (SWT) has promised to protect the Qur'an though and it still remains intact 1400 years after it was revealed. Do you not think millions have tried to destroy the Qur'an? Have you heard about what the Mamluk empire have done, prior to their conversion to Islam?
We have, without doubt, sent down the Message; and We will assuredly
guard it (from corruption). 15:9
It did not take the Kulafaa 20 years to compile the Qur'an, the Qur'an was compiled at the time of the Prophet (SAW) in the form of recitation. The word Qur'an itself comes from أقر which means to recite. Uthmaan (RA) has 'compiled and standardised the Qur'an in a book form with the help of the huffaadh of the Qur'an. If you think the memory of hundreds of men are unreliable, then walk in a masjid in jumaa, recite any verse of the Qur'an loudly and make a mistake deliberately, you will find at least over 30 men race hastily to correct you. We know it word for word, letter for letter verbatim 100%.
Uthmaan (RA) has acknowledged that since the revelation of the Qur'an began, people would write verses of the Qur'an on animal skin, wood, etc. He heeded that this could potentially lead to corruption of the Qur'an so he ordered that all these pieces be gathered and burnt.
"I happily know where I stand". No offence mate, but your views and beliefs are shaped by scientific theories. Thus they're prone to change like the British weather.
http://journals.plos.org/plosmedicine/article?id=10.1371/journal.pmed.0020124
On top of that, the so-called 'experts' in these fields frequently contradict each other.
I'm kind of busy atm and I'll end with this: we have our views and beliefs, you have yours.