I am not a Christian, but I highly value the liberal Christian strand in Unitarianism, as its alternative interpretations of the new testament in particular have helped to liberate me from the oppressive and painful interpretations I received from my fundamentalist and evangelical upbringing. People who do not have that particular painful experience perhaps can't know the fear - and actual physical pain - that it induces. I am very grateful to liberal Christianity for liberating me from that fear. Despite being a Pagan since the age of 17, I still had that fear (of hell, basically) lurking at the bottom of my psyche, encased in a volcano of anger. Once the anger had gone, the fear was still there, and it is liberal Christian interpretations of the Bible that have liberated me from that fear.
On a more positive note, I also value the fact that I can find a lot of common ground with liberal Christians, on values, shared appreciation of the beauty of Nature, and frequently shared understandings of the nature of the Divine as immanent and loving and including both genders as well as transcending gender.
If we have travelled by very different paths and still arrived at a similar understanding, that suggests we might be onto something. I met an ex-Franciscan who has a remarkably similar apophatic understanding of the Divine. I have met Unitarian Christians with a deep appreciation of the Divine immanence in Nature.
As a dear liberal Christian friend remarked approvingly, "Ah, so liberal Christianity made you a better Wiccan?" To which I replied, "Yes."
Liberal Christianity liberated me from my fear so that I could concentrate on my spiritual path of joyous communion with the Divine in Nature, with spirits of place, and with the land.