In the name of Allah the Most Gracious the Most Merciful.
In my opinion i believe Allah created us because He loves us. When Adam was created, he was placed in jannah and because Allah loved Adam a.s he created for him Hawaa(adam's wife). Allah placed adam in jannah. Jannah is a magnificent place to be placed in. This therefore means to me that Allah intended for us to be happy always, cause the first thing He did when He created Adam is place him in jannah. Allah gave adam a free will that he did not give the angels,so adam would do as he wished when in jannah, and he gave adam knowledge. That shows you how much Allah loved Adam, he therefore also loves adam's descendants very much.
To ask yourself why did Allah create me and place me on earth and put all these negative feelings in me and obligations, is human but comes from the shaitan. You ask, why did Allah create me?why didnt i get to have a say on whether i should be created or not, what use is there for my creation, when Allah has no need of my worship, thats true. Allah has no need.PERIOD!!!, but lets go back to the beginning of creation.
Say when adam was created, and was placed in jannah with his wife, he didn't disobey Allah, and shaitan also did not disobey. We wouldn't be discussing this cause we would be busy in all the delights in jannah.imagine being brought to existence just so that you are put in pure bliss and happiness. Adam was tricked and disobeyed and as Allah's will, because Allah wills what He wants to will and it isn't for us to question Allah, He willed we come down to earth. And because He loves us, he created a world for us and senses and knowledge to utilize and comprehend this world. And gave us guidance by sending prophets to remind us of our origin, this too is an assistance and mercy from Allah cause when He told us to descend He would have left us without guidance and prophets and thus all of us would live in a chaotic world that has no good in it, a world that is a literal hell, because man is like an animal and worse without guidance,if you don't trust me go to somalia or countries with collapsed governments and when you're violated go to the lawless government to help you. I think you get my point.!
Now this world in itself is jannah but we are the ones that made it hell. The guidance He sent us is to guide the soul back to bliss, back to happiness when the souls was with its lord, because just as our physical body needs food, the soul needs its Creator because it originated from Him.So this guidance is in form of dikr and prayer and good deeds, how else would we know about this without Allah,subhanallah.when adam was in jannah he was sinless and the soul was near its Lord so there wasn't these acts of worship, but now that the soul has descended, its still need to be near its Lord, thus these acts become necessary, not because Allah will benefit(a'udubilah) but because the soul will benefit, it is its nature to crave for nearness to its lord and without Allah the soul will die.
So when Allah s.w.t, all praises and thanks be to him says in His Most noble Qur'an,that He did not create man and jinn except that they may worship him. This is so, and Allah knows best, for our sake,because He loves us He wants life for our souls. If we go against the souls true need for Allah, we bring about unhappiness. So why DID Allah create us? He created us cause He wanted to create us. He brought us from nothingness and elevated man to high level. He is Great and infinite and to ask that will cause doubt in our hearts and to question Allah which is un-Islamic and ingratitude. We do not ask why Allah did something, we believe in him and His infinite knowledge and Allah is All Good and Merciful and Oft forgiving. If you ask me, asking such questions makes us ever more ungrateful, and we do not deserve to be existent if we result to questioning Allah. We seek refuge in Allah from the evil of our own souls. May He guide as and give us life, And May He forgive us our endless countless sins.ameen