I’ll echo statements above that ease of use is a big factor for me.
I’ve had similar experiences with some 3d printers. I had one sitting around for a year because there was an issue with prints leaning, and I didn’t have time to troubleshoot and fix it. I don’t have any immediate need, so I’m more than willing to wait.
On the flip side, there have been a few people on the forums that have purchased a cheaper Chinese laser while they are waiting. Here are some threads about there experience. There are probable some more threads out there, too.
I think it really depends on what you want to do with the Glowforge and if you are willing to wait for it.