I would. I have four blogs of my own that I've been neglecting while I build up my articles here--two are on Blogger and the other two on Wordpress. Also, I have content up at Infobarrel, Triond, Wizzley, and Web Answers, but not much as they aren't as fun for whatever reason.
I still have content at Helium, Bukisa, and Suite 101, and I still am registered with Demand Media and Elance but I'm kind of sick of freelancing. Demand Media especially is like writing for Satan. Yuck. I just downloaded a cool Apply app called iBooks Author, which lets you write ebooks and upload them directly for sale on iPad, and I have a gazillion ideas I haven't had time to even start.
I will always write because that's what I do. But it's a weird era. Will we have writers (as we understand them) in 25 years? Hard to say.
HubPages definitely has the most user-friendly platform and community.