>Different people, different tastes. On a private notebook screensavers may be useless.
> But I've often seen password-protected screensavers in offices.
Personally, I have very little trust in the ability of X11 environments to securely lock a session. I remember for many years how windows would pop /over/ the screen saver. Or the screen saver crashing, defeating the security it "provided". Or the screen saver taking 30+ seconds to pop up after resume (why is it so slow to start???). Not to mention, under many circumstances the screen saver will never start (one of the Wayland videos from Linux.conf.au actually mentioned this).
Work has been done to improve the situation (I believe an extension was developed to try to solve the first one), but I still find the whole screensaver-as-locking-mechanism to be a poor fit. I'd rather see Linux adopt something akin to what OSX and Windows have been doing for somewhere around a decade, where the lock screen is its own secure context, instead of just a window painted above all the others. I believe the Wayland developers have even spoken about doing something along these lines in the past.