The Bible indicates that the Tree of Knowledge brought a curse. A part of that curse was loss of access to the Tree of Life. In the normal understanding, this curse was pronounced by God. The biblically confirmed reality that God is Love or Love is God, strongly suggests that Love is what cursed Adam and then mankind. If God is Love, then God is the moral universe, the spiritual element that underlies all else, especially what we see and experience as the physical world.
It may seem preposterous to many, the idea that Love can be a curse or bring a curse. Some might agree that the potential disappointment of loving someone and having that person reject you is a curse of sorts. However, that kind of curse falls on the lover. The biblical curse is different. It applies to the supposed object of love, the creatures made in God's own image.
If Love can bring a curse that is biblically equivalent to God being the cause of that curse. The curse of Love exists because Love operates right alongside the law of reaping and sowing within the moral universe. What we humans sow we inevitably reap. Love says that when we operate without regard to Love and its operating principles, like the Golden Rule for instance, we reaped the cursed consequences.
Among those consequences is the loss of access to Tree of Life as noted above. The Bible says God took the Tree away, which means that Love prevents us from enjoying the benefits of that Tree when we chose the Tree of Knowledge as our life principle instead of Love. Whenever we reject Love as our guiding light we lose the opportunity to be alive in the fullest sense, We settle for existing instead of living.
The Life represented by the Tree of Life requires that we reject the Tree of Knowledge. If we insist on being the assessor of good and evil for others, then we reject Life and accept Death instead. In the day you eat thereof ye shall surely die.
The Tree of Life symbolizes an opportunity we continuously face. We can avail ourselves of that opportunity today, tomorrow, or never in this lifetime. It is entirely our choice to make. But there are opportunity costs or consequences when we reject Life in favor of death. Those costs are not God’s disapproval, per se. He may wish us to do differently, but the larger issue is whether we are growing in our divine image based on observing and learning from our mistakes.