I think there's a few things that you need to have for being able to do an at least decent blog.
First you must have something to write/talk about.
Either if you have some opinions and can do reviews or some kind of commentaries.
If not that so at least some kind of knowledge or skill to share.
You also must be able to express that in a fun / interesting matter.
Having some kind of personality will help. Especially if you do a video blog or podcast.
Last you also need the time and will to do it regularly.
I have neither of this.
It's rare that I have a strong opinion on stuff.
I'm all about the middle ground thinking everyone has a point and think most stuff are decent and don't really hate or love anything.
Which I actually think is a good stand that more should have. But it doesn't make good blog material.
Don't really have any cool skills either to show unfortunately..
I'm also not that good of a writer or talker. It was always my worse subject back in school.
Writing this stuff is hard enough for me. And I absolutely have no personality to make up for it.
Lastly, I sure as hell doesn't have the time to do it properly. lol
So no. I don't do blogs.
/SK