its very needed : it will minimize the load of site developers and maintenance team

but for some plugins or themes its not good , last time I have updates a slider plugin which was not working properly after the update , and I was unable to revert back the changes , actually I am still searching for where can I find the logs of core & plugin/theme update procedures.

if the wordpress team is thinking to add this feature then they should take all the precautions.

I should add this here, I have setup core wp updates automatically (while installing wp via QuickInstall/softaculous ) and found no bad things after auto updates.