I mean no disrespect, but what's the bad stuff being done my Microsoft today?
Abusing their patent portfolio directly, ditto through proxies, continued attempts to subvert open standards, bribery to use Microsoft software in various third world countries (and in Romania too, and Germany for that matter) and many others besides but those alone would be enough to not make me go back to using their development platform.
http://yuhongbao.blogspot.ca/2014/08/my-wishlist-for-satya.h...
It also includes things MS has done in the past that is not too late to fix.
Locking down computers using UEFI Secure Boot and taking control away from the owners of the machine.
Sabotaging the office document standard process at ISO.
Corruption in cases where governments explored switching to alternative operating systems.
Working against software patent reforms.
All these happened within last 5 years (and continue to happen).
The last ruling in the SCO case was a mere 4 years ago.