When we (my wife and I) decided to start a family, we didn’t do it to have a servant, a tax write-off or someone to yell at and take our frustrations out on. No, it was a decision made in love, acted upon by love, to have someone to share our love with and teach to love. Do you think it was any different when God created Adam? When our son messes up and does something he was told not to do, do we write him off and forget about him? No, we punish him (if it is needed), but always continue to love and nurture him. Do you think it was any different when Adam ate the fruit of the “forbidden” tree?
Without the tree (or, more accurately, the edict to not eat of the tree) there would be no choice, no temptation, no lie from Satan about it. But without the tree we wouldn’t be free to choose God – He would simply be the only choice. God didn’t want slaves, robots or drones. He wanted a family that would choose to be His.