riddle.

i don't realy know where to put this but...(god i use ... alot...
)
anyone who heard this before please stay quiet.
a man lived on the tenth floor of a building.
every day he took the lift down to ground level.
when he came back he took the elevator to the 8th floor and walked 2 stairs up towards his room.
why didn't he go to the tenth floor instead of the eight?

anyone who heard this before please stay quiet.
a man lived on the tenth floor of a building.
every day he took the lift down to ground level.
when he came back he took the elevator to the 8th floor and walked 2 stairs up towards his room.
why didn't he go to the tenth floor instead of the eight?