Unwanted milestone

It's been 6 months since the last time Liz and I were intimate. Six months of a purely platonic relationship, half a year of a cold bed. The end of our love-making roughly corresponds to the beginning of our engagement, but that shouldn't be seen as the scapegoat for this current situation. Our love-life had been anemic and fitful very long before that. For the first year or two that we were together I tried many ways to encourage our love-life and promote communication, but those efforts either back-fired and resulted in fights or had no effect. I've resigned myself to the apparent fact that there's nothing I can do to improve the situation. To deal with it, I keep reminding myself that physical intimacy is just one minor aspect of a relationship, and I shouldn't let it jeopardize the other 95% of the relationship which is good. I tell myself that, so that mentally, I can deal with the situation. But that mantra does nothing to soothe my emotional reaction to it. I have so many negative feelings and thoughts about this matter, balled up in the back of my head. I may be able to accept a sexless relationship, but I'll never be happy about it. Regardless of my own selfish carnal desires, I can't deny the creeping feeling that there is something fundamentally WRONG with a relationship where physical intimacy is completely absent. I think that's what troubles me the most.