Actually I for example use Ubuntu on my laptop, develop for upstream projects.
Ubuntu is quite a nice distro but I'm not really happy with their relations wrt upstream. In fact for the packages in universe/multiverse, I prefer reporting the bug directly to debian otherwise I'm not sure if it will land in debian or upstream.
I would really prefer if ubuntu did less hacks to "fix" stuff, but instead worked with upstream to find the proper fix. I know it's harder and it takes more time but it benefits more people (and there are less chances for the fix to create a regression).