MPP: You keep your electronics for so long support ends for them and/or they eventually become comepletely unusable.
Just today I got an email from Amazon, basically "Hey, you know how you have one of the oldest and shittiest Kindle models in existence that can still turn on? Well, it's about to get shittier, when we cut off your access to the Kindle store next month!" (there is a workaround, just mildly inconvenient, but whatever)