I believe that is after the Resurrection when we get a body.
He later warned that we should "fear Him which is able to destroy both soul and body in hell" (Matthew 10:28).
Plus Satan's active in the world "1 Peter 5:8" so I'm not sure that scripture teaches Satan is in hell at this time either.
And Matthew 23:31-46 final judgement Matthew 25:41..
I believe God holds back until the day of Judgement.
Matthew 13:39-40 Revelation 22:12
I know the Bible says spirit will return to God who gave it and I do believe that but according to the meaning of the Hebrew word for spirit. It is Strongs' word number 7307 "ruwach (roo'-akh) wind; by resemblance breath, i.e. a sensible (or even violent) exhalation."
So exactly what returns to God and what is spirit is the question as the Bible states it took the spirit being breathed into the body which became a living soul.
But that is besides the point because you need both soul and body to be destroyed in hell. And spirit returning to God does not neccesarily mean sent to hell. I think there are things that are open to interpertation so that is why different views on the subject of hell for those who believe it's a real place.
A person can read up on it from both points of view in wording that is literal or symbolic with meaning in figures of speech or being descriptive and directed in meaning to a certain crowd of people back then at the time of the event.
And people that do not see the greek word the ages as only "forever and ever," and "Forever and Ever"--A Poor Translation as there are some students of the Greek who admit that this is not a faithful translation of the Greek words found in the text. And the final eon is that of new heavens and the new earth wherein reigns righteousness (2 Pet. 3:13).
As God is in control of the universe God would also be in control of Hell. I don't believe it is out of his control of how long it may burn. I believe God has a plan of making everything new again.

LAZARUS AND THE RICH MAN EXPLAINED! A JEW AND GENTILE RELATIONSHIP!

http://www.youtube.com/watch?v=EccyF6Dmu-E

I believe God could let satan and his angels and people burn forever and ever but I don't think God will according to the word translated forever. People have to research up on all of it themselves and then decide but regardless just burning for one hour would be bad enough all one needs to do is place ones hand on a burning stove and try to keep it there for an hour to decide how bad it really is. I don't take it lightly hell is real. That is for sure.