HDMI does in fact suck ass. The connectors are flimsy. The cables are thick and unbendable for any decent length run. There must be something about the protocol because syncing issues are extremely common over HDMI. A 90 degree adapter between the 25' cable and my projector and the image sparkles and cuts out. It's completely unwatchable.
Bring on HDBaseT. The sooner HDMI dies a horrible death the better off the home theater crowd will be. Audio and video over cheap-ass cat 5e? I'll take ten.
You're buying crappy cables or something. Half of your complaints are definitely dependent on what cable you buy (quality of the connectors, flexibility), and I'm going to guess the rest might be as well. The issues you describe sound like either a cheap cable that is not properly spec'ed or else your setup.
I've done a ton of HDMI and it has actually been a godsend compared to what was before, as 99% of the time it just works right, you might have to tinker with some settings to get fully setup and configured, but you'd have to do that anyway so its not a big deal.
I have yet to have an HDMI cable break or the connector either. I've had far more Cat5 connectors break in fact, and likewise I've had more issues with VGA and even DVI, although both are fairly rare as well.
While I agree it would be better over Cat5/6, HDMI was actually a big improvement for many years there.
Its not perfect, and yes the updates makes it a bit of a pain, although that's not so much the cable's fault as it is technology where it went from progressing slower than molasses for audio/video setup, to now there's 50 different things they want to do (1080p, 3D, 2K, a ton of color crap that is pointless right now and there's so many different standards and formats there that its a giant pain already), while also supporting old tech.
Also, to the person that said HDMI isn't any better than VGA because you can get VGA cables molded with digital audio cables, um, you can't get that with support for lossless surround formats, the only way you get that is with HDMI.