I mean if he's always on the scene, there would be less fight scenes since he ends it with just a punch. That would be boring.
If ypu dont like the way murata and one do things and dont care about the rest of the cast theres the door:
I do care about the rest of the cast. I've also red the webtoon so I know what will happen next. My point is that saitama's late entrance type of thing is getting repetetive.
And btw, it's really ignorant for you to tell someone to jist stop reading because their pointing out their opinion on a series they're continuing to read ever since its release.
Saitama almost feels like a side character as the series goes on, its getting annoying.