Is it common/normal to be OBSESSED with other people's religions?

In my opinion it is not a bad thing to have an open mind and explore all religions and also explore others religion. Knowledge on any subject helps you define what your views and beliefs are. Obsession is not 30 minutes at a time or a few hours. But, to answer the other part of your question the best way I can is only with another question...What is common/normal to you? Common/normal is viewed differently by everyone.