We disable sleep and always have. Hibernate can be attacked using a different method.
I either lock the machine and leave it running or shut it down. Either way, it comes home with me.
Where someone stealing it is unlikely, as they have to get past the security robots, laser wielding sharks, elevators with dubiously reprogrammed controllers, the hallway of flamethrowers, followed by a liquid nitrogen moat. All, while the BOFH MKII watching and waiting.