I understand that having foreign objects inserted into the vagina/cervix isn't everyones cup of tea and that maybe you do not understand why this is done. However, the same question could be asked how anyone may enjoy the use of medical instruments inserted, or even fisting - which certainly is more than 4-6 inches. But not all insertion is about the 'feeling' - for some people it can be the mere idea of having something inserted, or the idea of control that they do not have when something other than a penis is inserted. It isn't all about the sensation itself just as BDSM isn't all about sex for some people.
You are also assuming automatically that a wooden dildo or phallic object would be used for insertion. Again, not all people would purchase such an exquisite piece of artwork for sexual endeavours. I know I certainly enjoy the visual artwork of some of the more individual blown glass dildos that are available. I do not automatically think - oh a glass dildo, I think - oh look at the colours and the shapes and how it feels to hold and caress, but then I am a bit of a freak when it comes to sensation work and play...[;)]
Peace and Rapture
