The conspiracy theorist within me wants to believe they shut the networks down to force the holdouts with ancient 'insecure' outdated OS phones to upgrade against their will. If they were like companies used to be back in the day, they'd respond to consumer demand, and not deny service to anyone still paying their bill on time. Cutting the service to perfectly fine devices rendering phones inoperable because it's old is no different than your utility company cuting you off because your home is 100 years old and has knob-and-tube wiring, and is illegal in the latter sense aka denial of service to paying customer for a utility.
I would be ok if it were only one or two carriers instead of all of them. What happened to individuality here? everyone is more borg collective these days. Companies more and more corporate and above the law. Monopolies aren't even being treated like the criminals they are. Makes me sick. I want so badly to go back to where customer satisfaction was the primary motive. It worked for decades just fine.
besides, those older networks were great if you lived in rural areas, as they provided a backup to where 4g/LTE still cannot cover. Nobody asked for 5G speeds. Nobody.
I cannot do the one thing i do most on my phone with just wifi, text messaging. Which was one thing that sliding keyboard would have excelled at. The Nokia N95 doesn't have wifi, so it's a paperweight sadly.