Actually the comment people about "you have a nice camera" is not so bad...as sometimes, it implies that you know how to operate a nice complicated camera with advanced features and functions.
It could be worse...
"you have a nice camera! what is it, a Canon or Nikon D something?" "No, I have a Pentax k-5IIs"
"Oh... must be simpler to work with that camera..." then silence... and soon turn away looking for people with Canikon shoulder strap and shooting with lens hood in reverse position.
Honestly, I don't pay attention to those comments or people any more; those people who know me know what camera/lens I use to shoot (mainly events).