True love is unconditional. The weak and unsecure try to 'force' love with punishment.
never mind the hereafter, infact there is nothing on this earth that happens unconditionaly..
A tree doesn't give fruit, unless it flowers,,
A boss doesn't give salary, unless you do the job required,
A child doesn't love his parents, unless they provide, love and show compassion,
An ill doesn't get cured unless they get treated..
A marriage/relationship doesn't last unless you start to think as two not as one (conditional)
A child doesn't become a scientist unless you educated him in that direction..
A night doesn't arrive unless you've gone through day light...
Meal doesn't cook unless you put it on the cooker..
You don't sensibly mature unless you get hurt and you learn from mistakes called experience...and so on..
What god says is that he has created us all out of his love and passion so that we recognize him and worship him alone..
Just like what parents would expect from their kids after many years of their hardship to raise us as beautiful,complete,humane beings...(you can't turn your back on them, can you?)
“I have created the jinn and humankind only for My worship.” (Quran 51:56)So if you want to eat fruit(paradise), you have to plant a seed(will) to become a tree(belief in God/religion),planting a tree is not enough itself, you have to make sure that it gives healthy(true path) flower buds for fruits, i.e prune,water,feed with nutrition, insecticide (good deeds, prayers,repentance)...in short worship....
God sustains us with his bounty and endless mercy while giving us free will and choice, warning at the same time through his messengers and revelations..
So It's up to us what we do as long as we can bare our own destiny upon our choices...
Why Did God Create Mankind?
http://www.islamreligion.com/articles/336/viewall/