I'm completely the opposite. When riding one of my very old bicycles I think to myself, wow, what a hunk of junk this is.. why do I still have it? and then I get on my newer bikes with great anticipation.

If there are things you don't like about new bikes you need to put your saddle and pedals on it. If you still don't like a new bike and instantly feel the superiority over your old bike...

well, I just don't know what to say about that, except that you shouldn't buy a new bike.