Blake Watson 
When I want to make a bulleted list using markdown, I use…
* an asterisk
- a hyphen
Poll ended at .
Jamie Teh@bw In slight contradiction to my answer (-), I use * for nested lists (and then alternate with - for even deeper nesting). Just makes it slightly easier for me to perceive nesting when I'm editing, even though I can also perceive the indentation.
@jcsteh that’s genius imo
@bw As for my (unnecessary) justification for using -? It's easier to type and I most often only have one level of nesting. Pure, unapologetic laziness.
@jcsteh It irks me that asterisks look like slightly-off-center bullets.
@bw Hahaha. I can't relate to that as a screen reader user. Though in Unified English Braille, an asterisk consumes 1 more cell than a dash. There's some useless trivia to support our preference.
@jcsteh That's kind of funny because I don’t experience your issue (that asterisks take more effort to type). I'm using an onscreen keyboard and I have dedicated dash and asterisk keys. Yet we both have reasons to use a dash instead. If the early polling data is any indication, asterisks are looking at a landslide defeat.
Conor C. Peterson 
Brett R@bw Weirdly I used to use asterisk and switched to using dashes about two years ago.
Benjohn@bw OMG – I would not have believed it. You're all animals.
Matteohyphen, easier to type. I use it everywhere, not only in markdown; email, word doc, chat message etc.
Mark Wyner Won’t Comply 
@bw I think the reason I use asterisks is because I’m a designer. The asterisk looks more like a bullet, so visually my brain has an easier time reading it.
@markwyner Yeah that makes sense. It just bugs me that in many fonts it appears off-center vertically.
@bw oh, yeah. That’s slays me. I worked a long time to pretend I don’t see that. 😂
@markwyner Looks like some monospaced fonts center up asterisks a bit. For example Menlo (top) and Courier Prime Code (bottom).
@bw I use Source Code Pro for my editor and terminal. It also has nice balance. Hooray for monospaced fonts!