I feel like one of the big "mistakes" of how the Stack Exchange network as a whole is promoted is that it's "a place to ask questions" as opposed to "a place to find answers"
I have about 120k reputation on one site, and about 91k on another. Ironically enough, it's the site where I kinda lost my way to 10k that's the most informative here.
Typically I'm looking for answers, or to contribute an answer to an existing question. One finds there's often multiple approaches to a problem and in a few cases I've posted a new answer to an old question that was well received.
I suspect another problem here is well "Why can't I do all these things all at once?" As a meta mod/user I can attest appropriate commentary is hard. Some folks use it as a "risk free" way to share a quick answer without spending the effort, or risking the downvotes to post a full answer. The system is meant to ease people into the way we do things, slowly.
I will never gather the hubris to say "I've got a completely new question that was never asked before", and beware much less will I claim to have an answer.
And yet, this happens. I've often had some obscure little problem for some hobby project and I didn't find an answer. I asked a question and the information is now available to others.
No, I want to contribute in form of refinements, and the perfect way to do this would be comments.
Commenting does need 50 reputation, but all it needs you to do is to get 200 reputation on one site, anywhere or get five upvotes on the site in question.
It's not a huge investment in time.
If you want to contribute, you're free to, but the system is really set up to ease new users into some of the quirks of the system.