> You can’t seriously compare smoking and keeping up with friends and family
You're right: It's easy to smoke outside without harming anyone but yourself -- and even if you smoke indoors, you only harm one room full of people at a time.
No doubt that smoking is way worse than using Facebook. But using Facebook (and similar sites) can cause mental health issues which should be taken seriously.
I'd argue a gif sent to someone during a heated conversation can make it light and end up funny. This goes for anything that anyone uses. I wouldn't compare this with smoking though.