Can we have one without the other? Possibly not. These may be polar opposites which only find expression when both are possible.
The answer may be found in the question, in the identification of the "I." Who we think we are and who we really are affects how we consider life after death, and what we will thus "feel" there.
We make a lot of products today just because we can, because it will make us a buck, but we are extorting people in the extreme, burying ourselves in unnecessary stuff, and raping the planet at the same time. How can we do better?
The communal structure that humans evolved in is fragmenting, from large family groups, to small nuclear families, with damaging effects. We're losing mystical communion and thus community as well.
General Relativity and Quantum Mechanics are at polar odds with each other, and many physicists are trying to reconcile them in a grand unified theory. Perhaps they are not meant to be unified. Maybe unity is found elsewhere.
The Eastern idea of "no-self" is confusing to Westerners, but I think the same concept can be found in our Western traditions, just known by different terms.
A new translation of Jesus' words about marriage and the resurrection.
A state of consciousness which is purified of all thought forms seems to be identical to the Ultimate Reality/Truth.
Should we encourage patriotism in and for our country? What might mysticism say about that?
Is it possible for us, as finite beings, to experience the Infinite? How?