I agree and disagree. At some point if we're going to say land ownership is a definitie and the government has no right to step in you wouldn't be driving to work because a highway woudln't have been built, you woudln't have power to your home because power lines couldn't be placed, etc.
Believe me, I hate government intrusion in our lives, I value freedom and rights but at the end of the day if property owenrs can hold out and say I want a billion Dollars nothing will ever get done.
That said I do think people should be paid fairly and I do think eminent domain should only be used in situations which are 100% a necessity. How that's decided I'm not sure maybe a public panel of citizens, a survey among neighbors I'm not sure but I think your absolute that property can never be taken isn't really realistic.