Okay, well, I'm 30. But I will be 31 in less than 2 months so that's my cutoff for your comics I guess, lol.
Seriously though, setting a "max." age demographic is very limiting in my opinion. Min. is definitely necessary of course, depending on the story's subject matter and content. But I still pay to see animated "family films" in theaters, etc., and I don't drag any kids along with me (which would be super weird if I did seeing as I don't have any). And also because many of those movies are just that good, as you are aware I'm sure.
I guess my point is that, I just want to make something I would want to read, at my current age or even younger. Or older!? I'm honestly hoping my comic can appeal to older folks (with maybe a min. age of 13-14, depending on how "mature" I plan to get), because I ain't getting any younger myself. And because over 30-year-olds exist on the Internet (but you know that lol)! Maybe there aren't too many on Tapas just yet, but it couldn't hurt to try and reel more in. And that would certainly speak to a greater universality at play here, ya know? And if a bunch of us here plan on making this our lifelong career, then... why wouldn't we?