I have a Go and I upgraded to Quest 2 months ago , like you I wasn't to keen on having to use my Facebook account to log in , but you can switch on privacy settings so nobody knows what your watching.
The Quest 2 is better than Go , the battery life is better and you can tilt the camera up and down when watching a video on SLR, visually it's better a lot clearer , the only thing I don't like is the weight of the headset it's too heavy and not as comfortable as the Go headset , also the headstrap can be a pain to adjust, I still use my Go when the battery goes dead on the quest 2 , it is worth while getting the Quest 2 it's better but if your not in a hurry wait for the Quest 3 it will be better.