Bridezilla vs. the Average Human.

If I'm invited to a wedding and accept, but then later find out that neither the bride nor the groom actually want me to attend, do I still go? It puts me in a strange position. Was I invited out of guilt? What have I don that's so offensive? I've never had any inappropriate relations with the groom and to my memory, I cannot remember offending the bride. Weddings are like soap operas, I swear.