It really depends on what your goal is. Usability, keeping a familiar interface, performance, all of that are things that make it reasonable to stay on an outdated OS, and none of these reasons are bad.
Security (which is the only thing we are really talking about here) does require updates.
If security is your most important concern, you need to update. If security is not your biggest concern and other topics are more important for you, it might be reasonable to stay on older versions.
But in the context of this post, which was purely about security, having long term security updates is important.
princessnorah@lemmy.blahaj.zone 6 days ago
Your evidence is an iPhone that came out 13 years ago last month. Back in those days, the year over year improvements in the hardware were immense, and the software tried to take advantage of it. But people would complain, A Lot, if those features didn’t come to their older device. Do you remember how much folks lost their mind when the iPhone 4 came out and iOS 4 allowed it and the 3GS to have a home screen wallpaper, but not the iPhone 3G? People were pissed and called it “planned obsolescence” that it didn’t get the feature. So, when the iPhone 4 hit iOS 7, they included all the animations. And then people called it planned obsolescence that it stuttered.