I used to, but I moved from Obsidian to Notion. They’re basically the same, but Notion doesn’t make you look at markdown code.
I use Dynalist for tasks that can be summarized in 1 sentence. They go in at the top via Google Assistant (with my voice, from anywhere in my house). Then I use the ‘move’ hotkey to send them to a category and priority. g1 means important groceries. w3 means unimportant work stuff. t5 means thoughts that I just want to archive. At the bottom of the g1 list is g2, so they’re nested in each other. So when I expand, I deal with the important things first until it’s empty, then move on to the next level.
I use Notion (formerly Obsidian) for everything that’s more than a sentence - thinks that are too big and overwhelming to be in dynalist. Things that are real long term projects. I generally write them out an essay form using the voice to dictate button on my MacBook. I make extensive use of [[ links to generate new sub pages. This lets me drill into projects at my leisure.
A rant - I do not do “knowledge management”, on principle. There’s no such thing as a second-brain, you have one brain. Taking linked notes you create yourself is great, because you’re synthesizing it from your whole brain, but collecting and curating bits of information is not great, that’s just re-inventing the internet. I consider it hoarding and a timewaster. I think people who do it are confusing knowledge with information. They’re the type of personality who gets pleasure from collecting every pokemon - I get the motivation, I just don’t see it as effective in life. Knowledge needs to be thought about first and foremost, not collected compulsively. I post all of my knowledge to internet forums, stack overflow, quora, etc, and contribute it to wikipedia, etc. It’s easily googled or looked up in ebooks along with the rest of the whole of humanity’s knowledge when I need it. The public internet is the proper place for tidbit knowledge, not my personal notebooks. Those are for creativity.