I love using digital tabletop... in 2d. The premade assets available are legion, and while I don't always find what I'm looking for the search often inspires new ideas for characters, settings, encounters, etc, and I now have the tools and skills to make anything very particular that I really want if I need it badly enough to invest a few hours.
Maybe at some point in 10+ years there will be a sufficient library of 3d tabletop assets for me to have a similar relationship with it, and maybe the right tools will exist to make creating my own when I can't find the thing I really need a similarly achievable feat, and maybe I'll care enough to develop the skills to use them. At the pace at which AI assisted art creation is developing maybe it will only be 5 years from now and maybe it will be very easy indeed. But I just feel like it is intrinsically much more difficult to make 3d assets than 2d, so democratizing the 3d asset creation process the way 2d asset creation has been requires some serious software breakthroughs.
And, I don't really see what 3d gets us. Yes it would deal with flight, multilevel environments, and underwater scenarios a lot better, but those are a comparatively small part of the game because physical tabletop struggles with them as well. Meanwhile the cost of 3d VTT is that there is definitely going to be a period of it having substantially less available assets and tools for creating assets than 2d; a major constraint on creativity. Unless there is major technological advancements and very wide adoption of 3d, that will remain the case indefinitely.
Maybe 3d is the future of the game, but right now it's mostly a silly gimmick, and probably will remain so for the life of the upcoming edition. I think at best WotC is making a big investment in it one edition to early.