Every gaming group eventually has The Argument.

It goes like this: someone wants to play a rules-lite system. Someone else wants the crunch. They each have a position. They each think the other is missing the point.

Here's what I've come around to: both sides are right, and neither is talking about the game.

Rules-lite people aren't asking for fewer rules

They're asking for rules that get out of the way of the fiction. They want to say "I climb the wall" and have the rule for that be one die roll, not a checklist of grip strength, fatigue, equipment, and elevation modifier.

Crunchy people aren't asking for complexity

They're asking for rules that generate fiction. The grip strength check is the point. The elevation modifier is the point. The rule isn't in the way of the story; the rule is the story.

So which game?

It depends on what the table wants out of an evening. There's no universal answer, and pretending there is just produces louder versions of The Argument.

Pick a system that matches the table you have, not the table you wish you had.