My essence - essential form -- is not human, but I'm in a human existence. this essence is moreover a potential, one that can't be fully actualized. You can think of an acorn that never gets planted, or another seed planted in the wrong soil. still, the potential tries to actualize in whatever way it can, in a human life and culture, so that a very limited development becomes possible. obviously, anything from body/mind modifications, other virtualities accessible through art practice, neoshamanism, dream incubation, VR, the furry community etc. can help.
now, since in our lives we experience not our form but privation of form, there is a sense that some great evil has befallen us. But this is only in the limited perspective of a separated soul or consciousness. in the greater conception of beings taken collectively and as a whole, their collective potentiality is to be like God, and thus must overcome all conflicts and disharmonies between them in apocatastasis. In order that such overcoming may proceed there needs to develop a sympathy between beings across species. One way is through liminal beings such as ourselves for which our actualization is trans-species. Such may explain, in the form of a theodicy, why even though our lives may be painful, we can find fulfillment once we recognize our role in the greater fulfillment of the whole.
Margery Cornwell-Robinson's essay "Retying: I Return to the Animals", published first in the pagan Green Egg magazine in 1974, then again in a Christian Quaker magazine (1983), explores these ideas. https://www.friendsjournal.org/wp-content/uploads/emember/downloads/1983/HC12-50742.pdf
As does Buck Young's essay "An historical overview..." http://www.eristic.net/fey/info/buckyoung.php, written for Greenpeace then adopted by the early Otherkin community.