^ More fundamentally then that is determining what the actual role of the Navy is. Nuke subs, as an example, might be a solution if our goal was to try and thwart a Russian or Chinese attack but I personally don't see any risk of that happening any time soon.
Call it the deterrent and/or muscle factor. Not to mention as ASE said, we do have international obligations.
We have troops on the ground in Latvia right now acting as a deterrent to Russia. Don't think for a second that things are guaranteed to be quiet on the Russia front.
The Chinese and Russians may think twice about sniffing around our Arctic if we possessed something to be afraid of.
Anyway, I guess my point is that I understand that we won't be great at everything, when it comes to the military, but my strategy would be to pick a handful of areas to really excel at, rather than be stretched thin everywhere.