Friends! A gift for you ... I have the answer!
Kellhus "sees" the 2nd Apocalypse and a path through it, the TTT. His "love" of humanity allows him to take on the challenge to thread the needle of events to ensure humanity's success. All that has happened, with standard deviations ( some of what you two are going back and forth about could be "slight" deviations along the path ), are pavers. The orchestration of events to drive an ultimate outcome. His love is such that he is willing to "allow" sacrifices of his family to achieve, but does not enjoy the luxury to entertain the misery resulting from those losses as most of us do. What you perceive is a lack of love is actually the strength of prodigious ( can't think of a better term ) love - the love of all humanity, the love of our future, our potential. Refer to all of the tales of insight into human identity during the Holy War/march ... Cniur concluded it was all a manipulation to have his followers "fall in love" with him so they would follow his leadership - but its more than that, it's laying the groundwork to "assist" humans next "move" in evolution. We're "stuck" in pettiness, childishness - but that's not all we are, the hot hot hot human emotions that drives our insane actions/reactions/paranoia in a reality with so many unknowns, the perpetual bumping into each other playing for advantage has an air of strength and beauty to it as well - just requires a better awareness of that octane we call love so we can become more. The great irony of this mad story of extreme violence and depravity is our optimism of our potential. Bakker provides an external threat limiting us, but the message is we're actually limiting ourselves. It's the Inchoroi "inside" us that takes over when we're self-destructively violent or petty. It's the human in us that elevates, that loves.
So there you have it - the message of this great work - summed up nice and neat - on the one hand, Bakker tasks us as readers to not fall in love with our heroes, but at the same time, showing us what real love really is. The Dunyain mastered 1/2 of human potential ... Cniur mastered the other half. Together, logic and the blast furnace that is love, one providing the thrust with the other the direction, we will rise. And that ascension will be made on the back of horror, but not through conquering each other, but conquering ourselves collectively.
Unless I'm wrong. A more interesting question may be why does it matter to you/us if Kellhus "experiences" love? Does the answer to that effect the validation of his attempt to thwart the human extinction event?