Yesterday's sermon (available here) was never going to answer all our questions about this weighty subject. Let me suggest 3 places to go if you'd like to think some more:
1) Francis Chan (one of the main speakers at this summer's New Wine) has written the most accessible book I've found on this subject: Erasing Hell. Available here. He talks about it in the video below:
2) If a whole book feels a bit too much, get hold of a copy of Tim Keller's The Reason for God (there's a copy on the resources tables at both churches) and read his chapter entitled: 'How Can a Loving God Send People to Hell?'. The book is also available here.
3) If you'd like to turn to a classic treatment of the subject go no further than CS Lewis' The Great Divorce. Available here.