Are the sequels to The Last Picture Show worth reading?

I read Larry McMurty’s The Last Picture Show in preparation for watching the film adaptation, and I loved it. Sad, funny, poignant. Afterward, I found out there are four sequels to the original novel — but none of them seem to be as acclaimed or significant as the original. Does anyone think the sequels are worth my time? I have a perfectly nice idea of what I think happens next in the narrative in my head, and to be blunt, if the sequels are totally unnecessary, I think I’d rather live with that.