Why is the Wedding Business Filled with Such Stressful People?

I find videotaping weddings rather easy, but, whenever I have to deal with fellow vendors, THEY are hyper, stressed-out, and running around like crazy idiots, making the whole process way more difficult and aggravating than it is, and than it needs to be.  I want to deal with intelligent people.  What I'm dealing with in this business are BELLIGERENT people, who think that, by the brute force of their personalities, they'll achieve success.  All they're achieving in fact is stress, making the brides who hired them very nervous, when these brides should be relaxing and enjoying their day (that they paid so much money for), and it's irritating the fuck out of me.  Stupid, stupid, stupid. 
God willing, this new steady job I started (NOT in the wedding business) will blossom into something really cool.  The job doesn't pay a fortune (yet), but it pays well enough to take the pressure off the bloody wedding business to sustain me.  Steady cush.  So far, so good...I'm working dilligently, they seem happy with me, and we're building a good relationship.