That may be the point the OP was making, and if that's so, I'd counter that the point is irrelevant to make. Sure, the user of your software doesn't care what it's written in. Duh. Why should they? If they did, it'd be weird. But the people actually writing the software should care about choosing tools that fit the problem. Not because the end-user will care, but because choosing a more appropriate tool will allow them to build software that gets to market faster, and has fewer bugs and is easier to maintain.