Personal websites go down a lot, when they're run by nonexperts and put on shared hosting. WordPress sites can have their security compromised, can go down when something goes wrong with your hosting plan, or can tank when you install the wrong plugin. They're spam magnets, and they have no built-in archival feature in case something goes wrong.
It's telling that the company behind WordPress, Automattic, offers spam protection and offsite backup as perhaps its two biggest businesses. It's also telling that WordPress' biggest fans seem to be expert designers / developers, who WordPress for a living and often have to hang around to maintain the sites that they built.
Twitter, Facebook, and Google+ basically fix the problems with having your own website. They just introduce a ton of new ones into the mix, and the reasons they've gotten so big are only partly because "they make it easy to share things." It's mostly because they're closed off from the rest of the web and rely heavily on network effects -- meaning, they're only useful if everyone's using them.
Somewhere in between are "blogs" like WordPress.com, Blogger, and Dreamwidth. They take care of the fiddly bits of maintaining your online identity, but they also play nicely with other services. You can follow people, leave comments, and "like" or "favourite" things, all without needing an account. It's just not clear how, sometimes, if you aren't tech savvy already.
Dreamwidth offers full HTML and CSS theming, supports Markdown, has extremely fine-grained privacy settings, and has no ads. Aside from learning how styles work, I've never had technical trouble with it, and it's never gone down on me. I think I'm going to restore this journal and try to turn it into a personal site. I just need to get up the energy to do that in between picking up the pieces of everything in our life that has fallen apart in the last year or so.
I'm physically unhealthy. My personal data's a mess; photos, notes, to-dos, everything is disorganized, from the apps that I use to the data I'm sorting. I have very few "spoons," and have been spending most of my day in a haze of trying not to think about anything, or beating myself up for being inadequate.
I'm trying to wake up again.