update 2. Allah is not understandable to us, a big question mark that we have been forbidden to think about Him as is (not as influences our universe and His creatures), but that does not imply that Allah after all is a real question mark, He is fully understandable to Himself and other beings in His scale of existence (NOTE: it can be easily proved that the set of all such perfect beings is a singletone, that is only a unique God is existable, so only Himself understands Himself and no one else). Let me bring you an example. Consider a world of all possible ellipses. All the residents of such a world are closed curves. Now you try to make them understand a parabola, which is an infinite limit of a cylinder from the conic section point of view (when e tends to 1 from values less than unity). No matter how much you try to say a parabola is an open curve they cannot imagine, they will answer you "OK! we understand very big ellipses close at infinity but anyway you must agree that they close anyway, even if at infinity!" However, you that are sitting above the paper can write simply the equation of a parabola as simple as y=x^2. Roughly similarly we cannot understand God as He is like nothing else that we know or can know: "وَلَمْ يَكُن لَّهُ كُفُوًا أَحَدٌ" (And there is none like unto Him) [112:4] but He Himself know Himself as quite obvious. We cannot say anything about His side of view unless Himself describe it for us, as the holy prophet --peace be upon him-- told us in the Qadeer sermon (ref. here):
… وَ لا یَجِدُ أحَدٌ کَیفَ هُوَ مِن سِرٍّ وَ عَلانیةٍ، إلّا بِما دَلَّ
عَزَّ وَ جَلَّ عَلی نَفسِه
… And no one would find out how He is from mentioning the secrets or
the obvious symptoms, unless with His own guidances toward Himself.
We are told by Allah Himself that He is The Most Merciful, now the discussion would become two-fold: on one hand we must confess that Allah, the Needless, does not need to be a creator as He exists on His own and not dependent on His creatures (which are mostly evolveable in the course of time and He is unchangeable and just beyond the time and the space), and on the other hand we must admit that Allah, the unique in existence, is not comprised of parts, so that every reputation of Him must be with Him very intrinsically. Note that Allah is not even a unique being like a coin that has two sides, one side or aspect of Him being His very intrinsic being another being His Mercifulness, another being His Needlessness, and etc. However, we still have a chance to understand things better. Every deed has at least two aspects, one is the doer and the other is the action itself. If I do something I am doing that for a benefit of mine for example, I will be affected in one way or another at the end, but when Allah does something He will not be affected at all, He affects without being affected in any way: no need, no evolution toward a better qualification, no change at all. So that creation when is done by Allah affects only the creatures and the creator is far beyond the reach of any effect from His creatures, He is just beyond the universe of all His creatures, beyond the time and space, although not being outside of it as well. If you feel the more that you think the less you can understand that's because we are all ellipses and God is the in-understandable parabola (analogy to understand better not to be rude at Allah, Glory to Him). We are told in Hadeeth that insisting on understanding the in-understandable God would cause in denial of Him and thus, Kufr, so must be avoided, all that is said above is only to make the issue understandable as better than nothing. Neither He wants (likes) nor He needs to create us, He has just no personal interest in anything and nor even a single need to be satisfied, neither then need to create nor need to be known and worshiped, He creates only for the benefit of the created being as He is the Merciful, that's all, His deeds affect only the created object not the doer. Adhering anything to this sentence that introduces an influence of Allah on His created Universe affects Him in return is human-understandabl-ization of Allah and would definitely be accompanied by Kufr or Shirk. If then you ask if Allah has control on His power again you have indeed tried to make the God understandable to yourself, intuitionalize Him.
If your answer is not answered yet the I can only hope that someone else would answer you better.
