I don't know....

So as you guys know I have a webcomic, I look at my statistics and there are times when people read through all the pages but they don't comment or like or share or anything like that. I guess these readers just want to read something and be left alone? Should I assume they enjoyed what they read since they read through all of it? That's what I've been assuming for this long. I want to get more interaction with people though.