Okay, then you don't care. That's fine. There's no mass hacking of phones going on, that's not the risk and whoever told you that it was is stupid.
It's an individualized problem, which is why it doesn't make the news and why you're on your own when companies fail to keep your device up to date. It's not as sensational as a massive fire so it's hard to care about.
Anyway, hopefully you'll never have to worry about being hacked. The odds are in your favour, after all. The issue is when you get unlucky.