I do, laptops and workstations.
It's just too easy not to, and there's almost no downsides to it. (I only need to reboot, once a month or two.)
Well, unless you consider the possibility of forgetting the password a downside, so for that reason I keep the password in a password manager.
In case my laptop was stolen, there would quite a couple fewer things to worry about. Especially things like client's data which could be under NDA's, etc...