I honestly hate smartphones as well, not because of any of what OP posted. On my PC, I can install whatever I want, including swapping out the OS. Most smartphones are locked down, and the few that allow alternative ROMs have huge incompatibilities w/ FOSS OSes (i.e. getting SMS to work is a bit spotty).

My phone runs GrapheneOS. I would much rather use something else (e.g. PostmarketOS), but it's the least bad option that supports all the features I need. I am still limited to Android-compatible apps, and developing for my phone is a lot more painful than any other ARM-based device because I'm stuck w/ the Android ecosystem.

The end result is that I don't feel like I truly own my phone, whereas I definitely feel that way about my PC. Yeah, my phone is convenient, and I don't use most of the nonsense Anon is complaining about (I mostly use websites on my phone instead of apps), but I still generally dislike having a thing in my pocket that I don't actually control.

Good for porn?

I can watch porn on the go?

Ruined cell phone keyboards

Ruined cell phone batteries

What do you mean "is there anything good about smartphones at all"? It made a ton of money for Apple and its shareholders, that's the only thing that matters. Who cares that it caused anxiety in a whole generation and ruined social life?

Unironically this. I wish I had just paid in dollars instead of my data. Looking back, it was too good to be true. It's hard to deny we never should've let it get this engrained in our lives.

Add in ruined music to that. Shitty speakers, super lossy codecs to preserve cellular bandwidth, even shittier Bluetooth compression, listening to music on a phone is convenient but it sounds like shit. And we've got generations of people who think that's what music is supposed to sound like.

GPS and calendar.

Before modern smartphones existed, I dreamed that they would one day exist and we could use computers and the Internet whereever we are, not just from home/work/school.

There are bad things about them too, but overall I would not want to do without them.

Apparently parents love it as it keeps the kids quiet and relieves them of the stress of parenting.

People either have forgotten or didn't live in the time before smart phones, but the world was fucking boring as, you HAD to talk to someone because you were so fucking bored, that's why we discovered shit, we were bored and had to do something, then turtle neck man gave us smartphones.