Congress should generally be removing laws, SCOTUS based law invalidation is sort of the last chance removal and ideally wouldn't happen very often, it should be reserved for cases where laws are internally inconsistent (and thus inapplicable) or are trying to invalidly overrule laws that require a stronger majority to change (to prevent constitutional amendments from being passed as regular laws just 'cause).

I think the intent of SCOTUS was originally to decipher laws into a workable framework - given that some laws could potentially interact weirdly with decade or century old laws... and to help highlight incongruities in laws that law makers may have overlooked during their original writing in an effort to spur congress to correct said law.