Reasons to Skip iOS 9.0.2
Before you jump in with the iPhone 6s iOS 9.0.2 update, know that there are some very valid reasons why you might want to skip the upgrade, at least for the time being.
The iOS 9.0.2 is an important update, it brings fixes for iOS 9 problems, but there are some people who will be better off installing it late. For instance, if you're traveling for work or fun, you might want to think about installing it when you get back. If you haven't prepared for it, think about installing it later.
iOS 9.0.2 is small but it could negatively impact performance so you'll want to be in a good place when you do decide to install.