That last option is too true for me. Don't have a wife
I don't know how long I spend using PCs, but I am using a PC most of the time at work, and that can be anywhere up to 45 (yes 45) hours a week, minus lunch and breaks (probably hour and a half a day), plus whatever time I happen to spend on the PC at home.
Edit: I really must learn to use the Edit button, and not the Quote button