Are LAN sockets still up-to-date? WLAN/wireless is the future!

Ok, alternative solutions (e.g. LAN over power lines exist). But that would be more of a fail in new construction if you forgo the LAN sockets and then start cobbling together alternative solutions.

It's more about the principle for me...

LAN only for access points. Three sockets in the house are enough. The rest is expensive and unnecessary. You recognized that correctly. But just to be safe, I installed one socket per room.

The TV has a LAN port but runs over WLAN. I see no reason for cables anymore. Those times are over.

That's exactly how I see it right now, after first trying to distribute the LAN sockets meaningfully. Do you use the sockets in the rooms that you installed just to be safe?

The repeater is connected to one. Everything else is via WLAN. That is more than fast enough and just as stable as cable. But I'm also not a conspiracy theorist. In the heating room, I still have a LAN socket, as with heating and ventilation it really doesn't work otherwise. You should keep that in mind.

Again the topic
No, even nowadays the rule applies: stationary devices or when power is needed, connect to the cable. Currently, Wifi is significantly slower than Gbit (let's not even talk about 10gbit etc.) and then has to be shared by multiple devices.
For MacBooks there are 10gbit adapters if you work with larger amounts of data
Try connecting all devices to Wifi and then try Voip...
Recently a user here wrote a funny thread. Let's see if I can find it.

As a gamer you also need low latency. That's why Wifi is out etc...

Also, for home automation, better cable in new builds. Remote controllable is not the same as automation...

Your internet also comes into the house through the air? Notice that?

Again with the topic
No, even nowadays the rule applies: stationary devices or when power is needed, connect to cable. Currently, WiFi is significantly slower than Gbit (let's not even talk about 10gbit etc.) and then has to be shared by multiple devices.
For MacBooks there are 10gbit adapters if you work with larger amounts of data
Try connecting all devices to WiFi and then try VoIP...
Recently a user here wrote a funny thread. Let's see if I can find it.

As a gamer you also need low latency times. Then WiFi is out etc...

Also for home automation better cable with new builds. Remote controllable is not equal to automation...

Your internet also comes into the house through the air? Notice that?

Currently everything in our house is on WiFi. We don't have a NAS, everything is in the cloud. Full data transfers such as full upload or download during initial setup might take some time, but you don't notice anything during daily operations. And for these rare cases a single socket would suffice.

Maybe gamers need it, but we are not. We don't want MacBook adapters. What’s the point of the nicely light mobile devices if you have to connect them to LAN anyway? And, as I said, for the rare cases when a lot of data is transferred, you can connect to a LAN socket if necessary. But why have two duplex ports per room if they are in the wrong place anyway? Then you’d rather need four and the kids, mom, dad, etc. surf/stream/whatever wirelessly with their laptop/smartphone/tablet sitting on the sofa...

This argument that you are slow on WiFi and it breaks down as soon as another device connects is nonsense in my opinion. These people connect their printer via LAN (data volume zero) and stream their movies in UHD via WiFi.

Funny side note: the internet actually does come through the air: hybrid, because this is Germany and all that...