The problem with vlogging is that it's suddenly got so popular, that there's just so much rubbish out there... Some people try too hard to be funny and come across as a sarcastic douche. Over-editing, pretentiousness, and begging for likes... I guess people just don't tend to have very interesting lives.
If any of you are considering vlogging, I'd tell you this. Try and be yourself. People are more likely to want to listen to you talk if you come across as a normal, likeable person. You're more likely to want to watch videos of people you can relate to. So resist the urge to be pretentious and loud, have a normal conversation, just be yourself and have fun.