To the OP-
I am not on the "future proofing" side simply because its not practical. I am on the side for build a robust network now that will handle more than your needs. Generally that's a CAT 6 cable but if you have the money you can go 6A shielded. That will give you 10g for 100 meters. Cat 7 or 8 are not standardized yet and there's simply no piratical need in homes just like 3 phase power is not needed in homes. Cat6A far more than enough for any residence. I prefer not to run conduits all over because its so much overhead for an unexpected payoff. I could cite many examples of "smart homes" being wired 20 years ago that are a disaster today. In theory it sounds nice to just pull in a new cable. 6A copper will be enough. Just as they can squeeze more bandwidth out of wireless, copper is the same. Changing compression, protocols, frame size, port trunking etc.. are options if more bandwidth is somehow needed. . This is what comcast does to compete with FIOS in the last mile. Copper will not be replaced in the foreseeable future. It will be supplemented where it needs to but it will be around. Some people in the late 90s and early 2000s said fiber was going to be in all houses. That proved to be incorrect.
Everything that does not move should be networked with copper. Printers, TVs, cameras, desktops, entertainment, appliance etc.... the only wireless devices should be portable. Cell phones, laptops, etc..... this will greatly improve the performance of the network and the wireless devices. The push to make everything wireless is a lazy way out of the lack of infrastructure. Wire a building correctly and use wireless where appropriate. We have cordless / battery operated tools and appliances but that does not make a cord and plug obsolete.
You can leave future wires in the wall but they are suppose to be labeled on both ends so they are not considered abandoned. Don't forget to run cable to where you will put your wireless access points.