Under the cover of the weakness of JRPG stories, western RPG stories should be any good and even somewhat worthy of adult interests.
Remains to find out how. And which ones.
Usually those stories are written for very young adults, late teenagers who have either zero to little adult life experience since adult life ranges from 1x to 4x years old more.
A lot of them are tales of empowerment, with heroes that have little to no social attachment, out of soil heroes, murdering hobbos and stuff. Very little to connect with an adult experience, way more fitting to college kids and like. They start in life, they will make big etc
Skyrim: generally admitted as having no story even though it is one of the few that enables to get a spouse and build a family, to settle down.
Disco Elysium: not even a RPG, point and click adventure
ME: the exceptional hero amongst exceptional heroes, biggest trope ever, saved an entire galaxy.
TW3: lone hero making his rules, empowerment tale, supposedly strong female characters that actually first and only exist through their sexual appeal taken from juvenile fantasies as they are no match to any woman body. The historical Poland approach.
Etc
At this stage, it could be required to point out story themes, elements or whatever that are better done in western RPGs and what treatments characterize an adult perspective and how.
Quite hard to remember a story that could be branded as adult or something for what ground.
JRPG stories not delivering does not mean western stories delivering.
If not, which one, what and how.