Visual Studio/Visual C++

A junior student gave me a spare free license to use VS/VC++ for 2 years, I've always used codeblock for C# and C++ and Eclipse for JAVA, dunno If I should take this step, mostly because I don't feel like paying a 12k $ license once these 2 years end but is still tempting.
Can you give me a slight insight? Please not hurr durr use emacs/gentoo/etc

>>15
Why care 'bout license, when you can pirate?

Also, cant we just reverse engineer their crud and run it opensourced on mono for free? Why should open source care about legality at all, when it can just take?