I think it depends on how capable your PC is of playing them. I went a few years buying none at all and then in the last 3 months I have bought 3. Main difference being I have a GPU that can run my monitor at a lot faster rerfresh rate than previous one, so playing games is more enjoyable now. Now only limited by the types of games I play. If you keep throwing money at the PC to keep it at top range, you probably buy more games than someone who has a 5 year old PC and who doesn't buy old games to play on it.
We aren't all techy
We aren't all techy