Why would you want auto update??

I’m still trying to work out why this is an automated feature rather than an “opt in” feature? I’ve already had it break one site due to a plugin conflict, which lucky I was able to rectify since I had backed up the site on a monthly basis. But with the very common issue of plugin conflicts when updating why oh why have they added this to the core?? The number one advice I give to any client who seems likely to want to do their own updates is BACK UP EVERYTHING FIRST!