At a prior job, we developed in VS10 on a Windows network and deployed to a Mono/Apache stack. I spent a lot of time debugging glitches in the Mono implementation after pushing "working" code to the production's Mono stack, and then writing work-arounds in my code -- not writing features.
I might avoid this by developing solely on Linux (which wasn't an option at the job) ... but you still may paste in someone else's code written for the MSFT implementation that borks your project.
To chime in with chc, there is such a huge OSS presence on Linux with a wealth of useful libraries to tap into. I must save so much time leveraging useful OSS projects in my Python/Django projects. Thanks, internet.