We're not really. With modern targeting systems an unguided bomb like a Mk.82 has a precision (circular area probable, CEP) 30-50m in perfect conditions. The sa

We're not really. With modern targeting systems an unguided bomb like a Mk.82 has a precision (circular area probable, CEP) 30-50m in perfect conditions. The same Mk.82 with a JDAM kit attached has a CEP of around 4-5m. Just to be sure you hit a target with unguided bombs you need to drop several at once. Missing a building by 50m is the difference between hitting it or its parking lot. That same mission could be done with a single guided bomb because it's more likely than not going to hit exactly where it's aimed. In Iraq JDAMs were sometimes targeted at individual vehicles. A B-21 with fewer smart bombs has a higher likelihood of destroying all of its targets than a B-2 loaded with a larger number of dumb bombs. In terms of Nuclear Triad, having more airframes is more important than carrying more weapons. With a larger number of B-21s able to operate at more airfields they're a more credible threat than a small number of B-2s. In nuclear deterrence you want the other side to think "Damn, there could be bombers overhead right now waiting to nuke me if I push the button. Maybe I'll talk this out instead."