found it odd to get friend request from people I really didn't have much interaction with

This! You'll just be surprised when they suddenly add you, I also experience that lol. But instead of feel bad, It will make me joy. I really want to see a lot of friend request in my list, but I won't confirm their request hahahat.

Ehhhh, most people are now of fb and the messenger is really helpful too to communicate with love ones.