Guest that RSVP "yes" for a wedding and then are a no show!

I’m sure most of the brides or maybe 99% have experienced this situation when planning the most important day of their life! Guest that that RSVP “yes” and then are a no show at the wedding! In fact, it’s not even for such big events like a wedding anymore I find people do this for all types of parties. I’m well aware that sometimes things come up forcing us to not attend after sending a “yes” reply. What could have happened “do I call and find out” or should I just not bother since they didn’t care to call or send a note as to why they didn’t attend? I can’t help but wonder, is it just carelessness or is it jealousy? I think to be invited to an event is an honor and one should treat it in such way, the host of the party goes through tremendous lengths to have quest enjoy themselves and yet some people don’t see that and could care less. Another group of people are the ones that don’t RSVP at all and one has to call them to find out if they are coming or not…. “Please” should we spoon feed them too! Send me your thoughts on this subject I would love to hear what you have to say.