We want our students to know that learning is as important a goal as problem solving in mathematics. Failing to solve a problem but learning something from studying the solution is not a failure at all.
Because understanding a new idea is itself a creative process, as mathematically impressive as discovering it in the first place. And it's also just as valuable - mathematics needs people who are able to learn challenging ideas with depth.
If what we mainly value is problem solving, studying a solution is just giving up. But if we value achieving mathematical understanding, we can see the studying of a solution for what it is: a core mathematical act.
And that's why studying mathematical examples is so valuable.