Basically everybody who votes Democrat that I know likes Sanders and tolerates or dislikes Clinton. Also, online, it seems like all of the love goes to Bernie.
However, my sample is absurdly biased. Most of the people with whom I interact are in the tech community, and of those, most are young (20-somethings). Probably, the same kinds of biases exist online. I don't doubt there are a lot of people out there who want Clinton -- particularly older people (who vote in large numbers).
I suspect that a big part of the appeal that Clinton provides is her foreign policy experience and connections. She knows all of the key players, personally, and has nuanced perspectives on the various situations. That doesn't make her good (full disclosure, inasmuch as I think she's far too hawkish, I do think this is one of her really strong points), but it makes her reliable. People are uncertain about ISIS, and she presents a known quantity. This is a particularly good selling point for people who are afraid of blustering ignoramuses like Trump making things worse.
For a less politically-charged analogy, consider Hollywood. Why do they keep letting Michael Bay make movies? They're all the same: mediocre story, terrible writing, forgettable characters, poor-to-moderate performances from actors, weak, cliched dialogue, huge explosions, and amazing special effects. The answer is: He's a known quantity. You're never going to get a piece of art out of him. But if you back his movies, you'll make a profit. You can't say the same thing about an aspiring, but untried director who tells you he wants to make art and promises you it'll be profitable.
Hillary Clinton is Michael Bay. She isn't Quentin Tarantino, and people who like her aren't expecting her to be Quentin Tarantino. She's got her shtick, and her supporters find it adequate. Meanwhile, you have Bernie Sanders coming along saying, "I'm Quentin Tarantino -- I can make art, and I can make it profitable." Is he the Quentin Tarantino of foreign affairs? I'm a Sanders fan, and even I don't know. We've never seen his policies attempted. To me, he is appealing (particularly the fact that he's less quick to war). But I could appreciate for some people, uncertainty is frightening.
So, all that is to say, I suspect that Clinton has a lot more support than it might seem from looking online. This, even accepting the fact that the machine and the media want to crown her before the primaries.