First off, the weight and goggle design is just too cumbersome. If they could fix that down the road, it would be much more compelling for my use case. The thing Apple decided to do was put as computer inside the device, so it could stand alone. However, the trade off is the weight. I would much rather the goggles be light, even if it means that thing that encloses the battery pack gets larger to house the operating system. At least that can be sat on a table rather than on my head. Not to mention needing something strapped to your head isn’t the best for factor anyway.
Secondly, the price is too high. I know it has more tech built in than any similar device, but they need a cheaper version for those of us that can live without having external cameras and that kind of thing. I would never use this for videography. I have a pair of sunglasses that can record video and it isn’t all that it is cracked up to be. The upside of a regular camera, especially one on a tripod, is that it is still and focuses on the point of interest regardless of what you are looking at. Also, who wants to wear something this cumbersome at a kid’s birthday party?
Thirdly, this is the first one. Apple is known for leaving stuff out of the first versions. No speaker on the first iPod touch, as one example. At the price point, I wouldn’t want to play Guinea pig.
A better alternative, for my taste, would be something like the XREAL Glasses. They are much lighter, which means I could wear them longer and still be comfortable. They are essentially in the frame of sunglasses, so easy to remove quickly, as well. The form factor just makes a lot more sense. Yes, you are missing an internal computer, 4k screens, and other very cool features, but I would rather spend $450 on a device now while the tech is still developing.
That being said, XREAL glasses ( https://amzn.to/3S1jLY6 ) are just shy of me wanting a pair at this point. When they get 4k screens, then I will jump in. Imagine working with a 13 inch MacBook with 3 large 4k screens in front of you while wearing a light pair of sunglasses. Hopefully, that product will be available by the end of the year. It will do the main things that I would want from these type of glasses…great video for 3D, big screen for movies and sports, and multi-monitor use of a small laptop. I am not really interested in gaming, so these glasses with those updates, will fill pretty much every need I can think of at the moment. I should also mention that price will matter because these won't be used everyday. If my wife is home, we watch movies together, but I can still get a lot of use out of these for my specific needs.