I'm not leaving LJ, but my use of it has diminished a lot over the last couple years. The last entry I posted was almost a year ago, and it led to an argument. For the first, and second times in my life, I broke bones this past year (I'm fine now), yet somehow I wasn't motivated to post about it here.
It used to be that I considered LJ to be permanent, Facebook to be semi-permanent, and Twitter to be ephemeral. Facebook has become more permanent, and that's where I go to post about my day-to-day life. I'm also Facebook friends with nearly everybody I've been close to on LJ--y'all are still in my life.
Since this is only my second post since I last paid for my LJ subscription, I'm going to let my account revert back to free. I'm not sure what it will do to the look of it, but I'm hoping I don't lose my customizations. You'll know I did if all of a sudden I'm using a stock template.
As for other services, I don't do a lot outside Facebook or Twitter (@edhorch). I'm also "edhorch" on Flickr, but I only set that account up to post hi-res pictures of our Hurricane Sandy damage for the insurance adjuster in Texas. I may have a Pinterest account, but it'd just be a placeholder that I signed up for at some point. I don't have an Instagram account, because it seems like people mostly use it to make a 10MP DSLR shot look like it was taken with a Kodak Disc camera in 1983. I have a Google+ account but don't use it much. If Facebook gets too onerous in their policies I might move over, but not yet. I just started playing around with Goodreads; we'll have to see where that leads.
So really, this isn't goodbye, but it's just an acknowledgment of what role LJ plays in my online presence these days.
You're not forgotten, even if you're gone. :-)
I've tried and abandoned most of the other sites you mentioned.
Argh. It looks like I shall be the last man standing on LJ.
Glad we are connected on FB, however.
Also glad you posted about your decision rather than just dropping off into to ether, never to be seen again. I like when people close the loop.
As it happens, the features of a paid account are things I don't use much, like having lots of userpics. I just checked back on my main page, and it looks just the same (modulo AdBlock). I didn't lose my customizations.