Personaly to me, you cant enjoy a game if you care to much about the fps. Note I said To much
It depends on the genre for me.
For something like an adventure game, a puzzle game, a turn-based RPG or just any game that doesn't have an emphasis on timing as the main crux of the gameplay, 30 FPS is fine. Some action games, like Uncharted 4, have 30 FPS in singleplayer, and 60 FPS in multiplayer, which is also good, since the singleplayer in Uncharted 4 doesn't require near as much precision as the multiplayer, but it is essential to the multiplayer. There are also some games that are locked to 30 FPS even on PC, like the South Park RPGs, because it's a stylistic choice. They wanted to make it look like the show, so they locked it at 30 FPS since the TV show is animated at around 30 FPS.
For something like a platformer, a racing game, or a fighting game, there is very little reason to play them at anything but 60 FPS, and yes, it's considered a standard for them to have 60 FPS. These games actually require precision timing, if FPS drop or it's capped to a lower rate, then it means you have less of a window to react to anything that is going on. Not just because you can't see things as quickly, but because many games don't read inputs on inactive frames, and thus, drop the inputs. It's the cause of "I SWEAR I JUMPED" moments in those kind of games.
Sonic Forces falls into the category of being a game that benefits from 60 FPS, more so than most other games, given how fast these games are. It's also a standard for the series, the only games that didn't run at 60 FPS were Unleashed (technically had an unlocked frame rate on PS3, but couldn't consistently stay at 60 FPS), Colours, Generations (on consoles, PC can do 60 FPS), Secret Rings, and Black Knight. Every other core Sonic game has either been 60 FPS across the board or had at least one version that ran at 60 FPS. And the 30 FPS versions tend to be more difficult to play.
Also, this isn't gameplay related, but for cartoon mascot games like Mario and Sonic, 60 FPS helps convey their artstyle (the very kind that Nintendo hipsters like to parade as being so much better than realistic artstyle games) much better. Take a look at all of the bouncy squash and stretch animations in Super Mario Odyssey. Those wouldn't work if the game was 30 FPS, the frame rate would be too slow to convey its hugely exaggerated animations as well.
