If you are able to see friends and family again do you find yourself making awkward not-sure-how-to say-hello-gestures? Personally, with my friends we have adopted the "elbow bump" greeting!
The above is based on a Spanish saying:
Le das la mano y te coge el brazo.
Give him an inch and he'll take a mile. (Lit: You give him your hand and he takes your arm)
The thing is we do need to mark meeting up with a greeting of some kind, it feels too weird to just "do without". Take a look at this article from El País that runs through the various alternatives that avoid breaching health protocols: