I did just that relatively recently in a house we bought. OS2 single mode duplex throughout the house, all converging to a trunk which is available in three locations for equipment. It's basically future proof, but also has its own well, things. You can't really plug into a duplex (I wish though), you have to put a small switch to it with SFP+ or 28 or whatever the speed you want. Higher speed switches are also a tad expensive. And then, there's the big one - PoE. That's why I also ran CAT6A next to each duplex to rooms and they're more or less for APs in the house. Overall it's definitely future proof and fantastic, but also a bit expensive if you wanna engage that fiber through the house. Pulling the cable itself isn't much of a cost at all and I recommend it.