I hope not.
In fact, doesn't matter. But in fact, it will affect the ethic and results of your work.
Tools are cultural objects that deserve your attention.
If you are really creative, would you not want the ability to influence the tools you use, and create new ones if others don't fit?
And why not use a Windows PC...?
That's true.
If all you have is a hammer, everything looks like a nail.
If it doesn't matter, why not use Free Software?