I have to admit I often go on reddit when I have some time, but I don't go on instagram or facebook.
Sharing videos on whatsapp when you're in rural areas is crazy, and to me it's really pointless, even though I like technologies.
It's hard to say if people are less social because of smartphones, since social networks are not so social after all.
Although I'm really curious if avoiding digital social networks would result in an amputated real social life. Online dating really really allowed me to get out more, and I don't feel like there is a good enough equivalent for friendships and activities.