I didn't enjoy these too much either. Some good moments, but given that pretty much everything but the human characters is CG, I just couldn't connect to it. Just found myself thinking about the cost of it all a lot. On the other hand, I did really enjoy the Thor Ragnarok (as if that one doesn't have a ton of CG!), The first Deadpool, and the first Avengers film - and probably some others here and there. Which I guess goes with what can't -remember-who said above, that the film's don't all cater to the exact same audience.
Also, I don't really care whether they make too much of them or not. It's not like Marvel would be making other movies instead, or that other films in the genre tend to be so much deeper or more artistic, or that people going to watch this in cinema would go watch a more 'profound' film instead if Marvel were to stop today. So, Marvel make this, and I can decide to watch it or not; and if I don't, there are tons of other films to watch, including good films coming out every day (but unfortunately not all accessible to me).
To me, it's like all the pizzas in supermarkets. It's not quite quality food, or even quality pizza; but it's not like they sell nothing else, and there might be a kind that you like.