When I stop using it, I turn it off. And I need to use it, I turn it on. It's a desktop computer and since it boots in ~1 minute, there is no need for it to be on unless I have something explicit to do on it.
I hibernate my desktop, unless there's a kernel update. It doesn't boot up any faster (I have 32 GB of RAM and swap is on a hard drive), but everything is where I left off.