What afterlife do you believe awaits us after death? I believe we are causes with effects, and those effects can't be entirely extrapolated from the cause. The identity is a dynamic thing, and exists in the subconscious world of everyone's being. Yes, I believe in an afterlife, because I believe no one lives a lie, which is what we're all doing.
Eventually we do experience a higher truth than the one we perceive in our waking hours. And the dead live on in the memory. If I have dreams of my dead mother, for instance, this is her maintaining to have an effect on me. How could it be any other way? I did not create my mother. I did not just imagine my mother.
So, all of us will continue to be causes that have effects long after our deaths. The unspoken truth of each of us will linger on in the subconscious, and communicate with the living, whether this be in revealing dreams or just in that subconscious world we aren't aware of when awake.