I had the same experience. I worked in 2 different companies, in 4 different teams. And I can see the value of planning. In the first company we broke down our 2 weeks work into 3-5 hour long tasks. By doing that we had to know exactly what is the work needed and we discovered the work that we didn't think about at the very beginning. Plannings would take 1-2 days. It was exhausting but in my opinion worth it.
In my current company we create 5-8 tasks for whole sprint and when someone takes it then they work on it for 2-3 days and discover more work to be done. At the end we usually don't make it on time. Even if we do, we spend about 40% of our time on bugs/improvements that we didn't think about.
My personal view is lack of experienced scrum masters and developers who have never seen scrum working at least once xD Lack of management support who would push the process.
My favourite: ("what?! you want to spend 2 days on planning?! I can implement it in that time!").