Go for it! I definitely echo the sentiments of the others saying to build on the platform you feel expressive in. I don't think .NET isn't turning up in more startups because of performance, dev environment, or lack of CS education certainly. I do think perceived cost might have an effect (cost of running Windows web servers, not the dev environment (note: I have no idea what running a windows server actually costs). Beyond that though I think the bottom line ends up being who you're interested in hiring and the makeup of devs in your area.
RE: PG, It's worth noting that he actually makes the point quite often that languages are much more important than many people think (not that the languages on the .NET platform aren't great).
I can't find the essay I'm looking for at the moment.. Maybe someone else can find it, the one where he argues that Lisp was a key component to the success of his site-building company many years ago. There are a number of them that touch on the reasons behind the shifting tendencies and fashions in technology among hackers... The Python Paradox essay seems especially relevant.
RE: PG, It's worth noting that he actually makes the point quite often that languages are much more important than many people think (not that the languages on the .NET platform aren't great).
I can't find the essay I'm looking for at the moment.. Maybe someone else can find it, the one where he argues that Lisp was a key component to the success of his site-building company many years ago. There are a number of them that touch on the reasons behind the shifting tendencies and fashions in technology among hackers... The Python Paradox essay seems especially relevant.
http://www.paulgraham.com/pypar.html