Why open-source software development environments are crap

I want to be a mono developer. But I can't, because then I'd have to give up VS.NET. Nothing comes close. I WANT to run Linux on my laptop. I gave up Windows PowerShell and went back to Cygwin. I always use find, grep and xargs in preference to windows search or Google desktop. I Love Unix and would love to go back to it. But I couldn’t bear to give up Visual Studio and TFS.