Yeah, 'cause that was the only option for the story to go. Aliens was about what Ripley lost and rebuilding a life from that. Alien 3 was about rehashing the whole trauma and, on the account of the writers and Weaver, just ending the damn franchise.
Sounds like more of that eighties generic hollywood commonstance bullshit to me.
Could Newt and Hicks deaths had more weight in Alien 3? Yeah. But Ripley, Newt, and Hicks running around as the Untouchables in the Alien Universe would've been more damaging to the franchise than James Cameron's sentry guns. We don't need invincible characters in the Alien universe. Thats what made the original so great. Nobody had script immunity. The three of them retiring in the sunset would've been too perfect. Something that would seem entirely out of place in the Alien universe.
By the third film, even Ripley's luck had run out.
I infinately prefer the third film to that happy go lucky bullshit. It feels real. It feels grounded in reality. It fits the franchise.
Or maybe people prefer the ending that if I go to McDonald's I can see Hicks feeding Newt a Chicken Nugget while Ripley opens her kid's meal toy like nothing happened. Because thats believable.