Re: Lack of decent content.
There are 3 brilliant flight simulators for VR: DCS World, IL-2 Battle of Stalingrad (and its siblings Battle of Moscow, Battle of Kuban, Battle of Bastogne and Flying Circus) and War Thunder (in "Simulator Battles" mode).
They all have excellent graphics if you drop over £1000 on a GPU, but War Thunder runs pretty nicely on a GTX 1070.
More importantly, they're all still actively developed so the flight simulator market is great for VR.