Personally, once I tried an IDE with integrated context sensitive help, inline syntax checking, real indenting, etc. TextMate didn't seem to solve the problems that I needed it to solve. It just became a fancy notepad app with some extra macros.
I'm not trying to put anyone's choice down. If TextMate works for you, then great! I'm very happy that you've found the right editor for you; however, the point of my post was that there are many other choices out there that confine the usefulness of TextMate to a very specific audience.
And personally, I feel like the cost/learning curve arguments are not really valid. Eclipse and NetBeans cost nothing. And ultimately, I found that getting what I needed out of NetBeans was much more intuitive than getting what I needed out of TextMate.