Disclaimer: I very much regret buying D4, which is also part of my FOMO issues.
But if you grew up with a beloved video games series it is hard to let go. I've done it in the past with other games. I basically boycott EA since ME3 (that was a hard one too, breaking away mid series) & Origin, and Ubisoft since Uplay. But it's hard when it is a franchise that you've spent hundreds or thousands of hours in, one that has basically no alternative like it. I know there's other hack'n slays, but nothing like Diablo's setting & atmosphere (maybe Wolcen, I don't own it, because apparently it is still a trashy mess).

And the worst part is that this is all happening to the whole market. It happened to mmorpgs before and killed it, and it happens to the rest of the industry now and kills it too. Something has to radically change, because this is definitely not fun anymore.