Why Just One Creator?
Quran 21:22 Had there been within the heavens and earth gods besides Allah, they both would have been ruined. So exalted is Allah, Lord of the Throne, above what they describe. I think this verse is the answer to your question. This verse rules out the possibility of more than one god. You can look for Ghamidi sb’s Tafseer of this ayat on his app or website. Both portals are not showing Tafseer in English for quite a few time so I am unable to give reference to it here. If you are aware of Greek or Hindu mythology, there are several stories where gods fight each other, many times for difference of opinion and cause destruction to mankind and earth. These type of stories maybe there in all polytheistic religions. Allah SWT in this verse has pointed out to similar consequences of having multiple gods. The smooth and harmonious functioning of this universe is proof that there is one God. Allah SWT is not accountable for his decisions. There is no one to challenge his decisions. Had there been so, as rightly pointed out by the above-mentioned verse, both heaven and earth would have been harmed.
Allah tells us in multiple places in Quran about Oneness of Allah. Tauheed is the 1st condition to be a Muslim. It is part of یؤمنون بالغیب . So we have to سمعنا و اطعنا In Hadith Abu Hurayrah (may Allaah be pleased with him) said: the Messenger of Allaah (peace and blessings of Allaah be upon him) said: “People will keep on asking questions until someone will say, ‘Allaah created the universe, but who created Allaah?’ Whoever encounters anything like that, let him say, ‘Amantu Billaah (I believe in Allaah).’” The Messenger of Allaah (peace and blessings of Allaah be upon him) said: “The Shaytaan will come to one of you and say, ‘Who created the heaven? Who created the earth?’ He will say, ‘Allaah’” – then he mentioned something similar (to the previous report), and added, “And His Messengers.” [i.e., amantu Billaah wa Rusulihi = I believe in Allaah and His Messengers] The Messenger of Allaah (peace and blessings of Allaah be upon him) said: “The Shaytaan will come to one of you and say, ‘Who created such and such?’ until he says to him, ‘Who created your Lord?’ When it reaches that stage, let him seek refuge with Allaah [say A’oodhu Billaahi min ash-shaytaan ir-rajeem = I seek refuge with Allaah from the accursed Shaytaan] and stop thinking about it.” The Messenger of Allaah (peace and blessings of Allaah be upon him) said: “The Shaytaan will come to a person and say, ‘Who created such and such…’” and he narrated the whole report. (Imaam Muslim, 134). In these ahaadeeth (Prophetic narrations) we see: Where this question comes from – from the Shaytaan; How to deal with it, which is: to stop pursuing these thoughts and these tricks of the Shaytaan to say, “I believe in Allaah and His Messengers” to seek refuge with Allaah from the Shaytaan. It was also reported that one should spit drily three times to one’s left, and recite auzu billahi minash shaitan rajeem Qul Huwa Allaahu ahad 3. With regard to the prior existence of Allaah, our Prophet (peace and blessings of Allaah be upon him) has told us about this, for example: He (peace and blessings of Allaah be upon him) said: “O Allaah, You are the First and there is nothing before You; O Allaah, You are the Last and there is nothing after You.” (Narrated by Muslim, 2713) He (peace and blessings of Allaah be upon him) said: “Allaah existed when there was nothing apart from Him.” According to another report: “There was nothing before Him.” (Narrated by al-Bukhaari; the first report 3020; the second report 6982). This is in addition to what is stated in the aayaat (verses) of the Qur’aan. The believer believes without a doubt, the non Muslim denies and the munaafiq (hypocrite) doubts. We ask Allaah to grant us sincere and certain faith with no doubts. And Allaah is the Source of strength.
I think we’re also disregarding the Element of Knowledge. When you look at the realities inside and outside of you and conclude that there is a God/s. (Using fitrah only, ignoring the premise of religion). Knowledge of the Past, Present and Future is what makes God – God. Since only an ever living and an ever subsisting entity could encompass All of the Knowledge of Everything to Ever Exist. (these are facts I don’t need religion to tell me). So how do we negotiate this with more than one being having the same amount of knowledge?