Why only Islam?
Reason being it is the only revealed faith from Allah the Almighty. It started with the Creation of the Father of all Mankind ~ Sayyidina Adam Alaihis Salam.
Created with earthen clay taken from all parts of this planet Earth by none other save for Sayyidina Izra'il Alaihis Salam upon being commanded to do so by Allahu Rabbul Alamin.
All the other of Allah's Malaikats @ Angels failed to accomplish the mission of getting earthen clay from Mother Earth to be used in the creation of Adam Alaihis Salam.
Renowned Islamic Scholar the Learned Professor Dato' Dr Harun Din Al Haj shared about this matter in a very detailed lecture many years back. The lecture was widely acclaimed by the many students and researchers in the Islamic world. I too learned quite a lot about the spiritual realm of Islamic Knowledge by studying from his work and other sources.
The difference between Islam and the rest of the self imagined beliefs practiced by a large majority amongst the many tribes and nations of mankind stems from the principal bedrock of faith in our Creator and the various forms of Kufur @ Disbelief towards Him the Almighty by adducing this and that fictitious deities conjured up by the ignorant ones amongst us.
Whether we like it or not, Belief in Allah or Disbelief towards Him is rooted in the knowledge or ignorance that one comes to possess during one's lifetime.
Belief in Allah is rooted in the realization of Life that is eminent in each and every living being or creation of Allah Subhanahu Wa Ta'ala encompassing all that there is in the seen and unseen worlds contained in the universes.
No matter how highly advanced any one is in the field of science and technology nowadays that would have baffled and stupefied the learned ones of the era's gone by, when it comes to the matter of life, even the most knowledgeable geniuses we have today with us will give up when posed with the question of 'Who gives us and every other living entity life?'
To know about the indefinite realities about Life and the surety of Death that has befallen so many others before us and which will definitely bring our own lifetime to an end demands that the thinking ones amongst us ponder upon one's ultimate acceptance that no matter what, everyone whether being a Muslim or a Kaffir will die one day and the same goes for every other creation of Allah!
Those who are advocating 'Apostasy from Islam' need to ask themselves as to who it is who created them?
The self imagined deity or deities which they worship at the bequest or exhortations of others or have been deluded into thinking that there is some other being more powerful than Allah?
What a preposterous notion that their self imagined god or deity chose to be born at that corner of the road junction or in some ominous spot not befitting the Majesty and Grandeur of Ar Rahman Ar Rahim Who is Above the entire creations!!!
To have latter day so called liberal thinking 'Muslims' being open to the so called freedom of choice in not worshiping Allah as our Supreme Lord and Creator is actually very heartbreaking.
Do these persons not realize that by their words and actions, they have actually stepped out of the fold of Islam and corrupted their Creed @ Aqeedah?
You can't claim to be a Muslim yet advocate the freedom to worship another as your god! There is no room for pluralism in Islam. One worships Allah Subhanahu Wa Ta'ala as one's Only God and Master.
To associate anything else with Allah is haram and takes one out of the fold of Islam.
Those who think they can get away with saying everyone is free to choose whatever one wants to pray to is clearly an apostate and ought to be judged accordingly.
There's no 'if's' or 'but's' about it.
In Surah An Nisa, Chapter 4 Verse 48, Allah Subhanahu Wa Ta'ala clearly warns against anyone associating anything with Him:
TransliterationInna Allaha la yaghfiru anyushraka bihi wayaghfiru ma doona thalika limanyashao waman yushrik billahi faqadi iftaraithman AAatheema
Sahih InternationalIndeed, Allah does not forgive association with Him, but He forgives what is less than that for whom He wills. And he who associates others with Allah has certainly fabricated a tremendous sin.
So to all those who are being careless with what they say and opinionate with regard to the question of worshiping some other being or deity instead of Almighty Allah, my advice to them is to repent and return to the true faith of Islam or suffer the consequences of their errors not only while still being alive here on Earth but also in the Hereafter.
Who gave us the Faculty of Reason if not Allah?
Think very carefully and return to the birthright of each and every human being to be nothing but a true servant of The Almighty.
Stop sliding towards the abyss of Apostasy and regain one's firm footing in the Truth of Ad Deenul Islam and re-establish one's Iman and Fitrah of Islam. The only true faith from Allah, God Most Supreme, Most High.
Wabillahi Taufik Wal Hidayah.
Wassalamualaikum Warahmatullahi Wabarakatuh.