Fixing bugs in bitcoin is THE FUTURE , like transaction malleability for example, included in the segwit core update.
P2SH transactions are the future, helped greatly by segwit
easily upgradeable bitcoin script is the future, enabled by fixing transaction malleability, enabled by segwit
new signature types are the future, enabled by the segwit patch
sidechains are the future, allowing free experimentation without messing with the main chain, enabled by segwit
allowing high throughput sidechain networks is also a good thing to have in future, enabled by segwit
These are some reasons among many others why the community at large particularly the more knowledgeable in the sector is on the side of the Core upgrade.
It's only the miners who want to earn from a fee market that are on a propaganda mission to convince the turkeys to vote for Christmas.