My point is that every breeder reactor ever built has been a massive boondoggle. Certainly there were political reasons behind the failure of some of them, but it remains a completely unproven technology. The technology may well work brilliantly, but we can't base the future of our civilisation on the assumption that eventually we will build a breeder that actually works. The history of nuclear technology is littered with expensive dead-ends.

Breeders might hypothetically be very efficient indeed, but the plants we are actually building or have actual plans to build are PWRs and BWRs with only marginally better efficiency.