It seems to be true that some computers have difficulty in doing a resume from hibernation. If your machine can come out of hibernation with no hangups, then fine, let it hibernate. If you are comfortable with shutting off each time you are done for a while, then do so -- this will consume a bit less power than hibernation but your machine will start more slowly.
I do neither. When I leave my machine for a while, I put it in "lock" status. In this mode it shuts down the display (after 10 minutes) but is free to work on several background tasks.
I get a lot of email -- every ten minutes or so, it collects my email from several servers so there is no backlog. Even though I have a very high speed connection, I hate so sit and watch it download 83 (or somesuch number) of emails.
At 3 AM it does my automatic backup.
During the night the mandatory updates can be installed and I do not have to watch it happen (it is pretty much like watching paint dry). Occasionally this causes a reboot which stops much of the background processing -- especially the collection of email -- but at least I do not have to wait for the reboot, only the login when I return.
Yes, this does consume a bit more power, but it isnot noticable on my bill and it makes life a lot easier for me.
You should be doing backups (daily if you use your machine daily for creative tasks). You should be installing the mandatory updates (there are many who disagree with this and monitor the updates very clossely). You should be doing a periodic scan for viruses (and other germs), ideally everytime you access the internet.
In summary, I do it my way because that is the way I feel comfortable. You should read the various opinions and then decide what feels comfortable for you. I sincerely hope that does not mean you skip the backups, software updates and virus checks. That might cause you serious issues at some future point.