....however, some of your applications may eventually stop working properly if you are running an older iOS as new developments come available. You can keep your current OS as long as you don't do any major upgrades/updates.
I'm old school, from way back to DOS. I don't use most of the features on my iPads. I like it simple and basic. I like it flat. I don't use facebook, twitter or any social media. Just go to a couple online sites/forums like here. I don't share or take pictures, etc. I don't multitask. One thing at a time. And you can tell I don't like change.