However, I do still eat them on occasion. Sometimes after a 30km run, all I think about is burgers so when I get home and sit and have vegan burger with vegan cheese.
It may not be as good as the 'real thing' but it hits the spot :)
A lot of the meat I was consuming was just a matter of treating meat as the default option, not because it was actually adding significant value. That style of eating comprised at least 75%-90% of my meat consumption, and cutting that out turned out to be extremely easy.
The last 10%-25% has been much harder though, especially when my wife and most of my friends like eating meat so much.
Also, I like the flavor and mouthfeel of things like oatmilk.
I'm also not convinced that milk is not a 'heavily processed' commodity. You are just using a pregnant cow to do a lot of the processing.
Sugar content without regard to glycemic index [0] is meaningless. Cow milk contains lactose, which has a very low glycemic index. Most milk replacements use maltose, which has almost double the glycemic load, making them significantly less healthy than actual milk (since they are all basically sugar and canola oil [1]).
[0]: https://onlinelibrary.wiley.com/doi/10.1002/mnfr.201901082
Edit: Also keep in mind that cheese is a processed food too. I think it's somewhat subjective whether oil mixed with starch and yeast is more processed than milk coagulated with an enzyme (rennet, usually from mold), strained, and fermented. Processed food isn't inherently unhealthy, but both cheese and vegan cheese definitely are.
Milk alternatives on the other hand can actually be anti-inflammatory because they contain antioxidants. Whether that still holds true for processed versions of it... probably depends!
The other big risk factor in cheese is saturated fat. I don't know if plant-based cheese is generally healthier in that respect.