Should I update to iOS 17.2?

You can "hear" horror stories about every update that has ever been released.

If you were reading these forum boards, you would have "heard" horror stories about the iOS version that you are using now...and every release before that.

Many millions of users have updated with no issues. A tiny tiny fraction have problems. The odds are heavily in your favor.

Remember that these boards are for users that are having problems. Almost no one ever posts to say that things are fine.

Here is a list of the possible security vulnerabilities fixed with 17.2→About the security content of iOS 17.2 and iPadOS 17.2 - Apple Support. Reviewing this might aid in your decision process.