They will keep potential near-peer adversaries at bay for decades to come.

Also, while it could not have been envisioned when they started to design the airplane, it's AESA radar will proably end up as it's most useful weapon. With modern software algorithms to drive them, those radar are capable of jamming, electronic attack, network attack, command/control communications and a few other things. The legacy platforms that do that stuff are large, slow, cumbersome, and vulnerable with the RCS of the houston astrodome.