Are you in your own house with some distance between you and your neighbors? In most apartment complexes you'll have about 30 overlapping wifi networks visible from your computer, so wifi reliability is very much not what you get in a less dense area.

I keep what devices I can on wired, but it's really not feasible for everyone or for all devices. I sometimes have to switch my phone over to LTE because the wireless sucks too much. There's obviously no ethernet port on that.