Infinity circuit cannot be completed, it's an Eldar 'afterlife' - a place where their souls are stored to avoid fate of being tortured by Slaanesh.
Eldar theory is that when the day comes all living Eldar commit suicide and form
Ynnead who will be powerful enough to destroy Slaanesh one and for all. This is at least what the Eldar believe it will happened.
But on the most serious side the similar thing Humans did almost 50.000 years ago - sacrificing the most powerful Shamans of Earth to create one powerful being: The Emperor. In the same way the Eldar wants to create a god in the warp that will make Slaanesh cry in agony before he finally disappear into oblivion.