For people who don’t want to watch the video of his final remarks to the court, this is apparently a copy of his statement: http://www.wkyc.com/news/article/308810/45/STATEMENT--Read-Ariel-Castros-final-remarks-in-court
Basically he says that he is not a monster, but is addicted to pornography. He also says that he never beat the women that he held captive and that the sex was consensual (he makes a point to state that they were not virgins before he kidnapped them).