My guess is if they know you don't like to eat meat anyway, you must be a glutton for punishment so why make the seating comfortable.  That would just be a waste of money!  :)  It is awesome that you were able to enjoy it and that they are putting out good quality food that will appeal to a wide range of people both vegetarians and not.  I'd probably sit down to a nice big salad before I ever tried a mock burger though.