Should I add the social sharing buttons in my blog posts?

Always!

Just today, my mother asked me how can she share a certain article from a website because it didn't include a "share" button.

There is an increasing amount of people who are not generally tech-savvy and would not know how to share something without those buttons.

And not just that, copying the URL from the bar, opening Facebook (or whichever social network), pasting and then adding your comment, is too many steps for the average user to take. They will be discouraged to share it.

Thanks for your invitation, Agree on experts answer.

Definitely! 

Social sharing buttons are convenient for people like me who are not fans of copy/pasting the blog-link on their social media profiles. In today's world of extreme one-click-away-convenience, social sharing buttons are a must-have!

Of course.....................................................................