I disagree with the other person, rsync + ssh is faster even in my own benchmarks. But samba is plenty fast enough these days, I can easily have it max out my gigabit network so I don't need anything faster. So for me (and I would guess the majority of people) speed really isn't a concern anymore, so I use samba because it's easy to use and it makes sharing network folders to anything else a breeze.

It's like phones. Yeah technically the newest iPhone is faster than this years budget Samsung. But when's the last time your phone was actually a bottleneck? (Unless you're one of those people who play games, in which case, actually please respond cause I could use some really nice idle city builders for my phone pls)

Real world usage tells me all I need to know.