You can always suggest people do something more or else, especially if you have no actual other reason to disagree with what they do. It's a platitutde. Nobody is living life to their fullest and usually has an interest which is arational or they find relatively simple to do in their leisure time. So do you, btw, being on social media.
 
You can say I sometimes make similar remarks, but it's not all I have to say, it's in addition.