Why Generations' Classic Sonic Is UNDERRATED

When playing Sonic Generations, people go for the Modern stages.
So why do people look over Classic Sonic so much?

MY TWITTER:
https://twitter.com/LukeStation_

TIMESTAMPS:
0:00 Why do people like Modern Sonic more?
1:33 Dissecting Classic Sonic's immersive level design
3:39 Is Classic Sonic underrated?

MUSIC:
Sonic Generations OST - Cutscene 8 [https://youtu.be/OOnS_bcT2hk]
Sonic Galactic OST - Data Select - Blast Off [https://youtu.be/goSScqbQgkU]
F.M. City - Spark The Electric Jester 2 [https://youtu.be/VkAaWCse9no]
Tornado Defense (1st Battle) - Sonic Unleashed [https://youtu.be/lCaJJwgeL1s]

Footage from FCPlaythroughs or LongplayArchive unless stated otherwise