I pretty much agree - as long as this is healthy untrust. Why redo something running for little benefit? But I know many people who dismissed smart phones at the beginning, or other pretty big things like AJAX. Their decision wasn't much based on a sound analysis. Also often they failed to identify the new realm. Rather when someone say "with that technology you can do that and that which is new, and in the future you may be able to do this, but it is limiting on that and this aspect", I take the person much more seriously for their analysis. The tried and tested may be what you know to use, but something better might come along as well, or establish a different new playground which you cannot imagine of as possible in your current framework of thoughts.