I don't see why there wasn't an option for both; however, with more and more applications coming out, and Microsoft wrapping them in (for example FrontPage has several components for auto installations of databases) and the natural progression from ASP to .net, I would think that the vast amount of sole proprietors will be using something similar to .Net while the new breed of professionals is going to like PHP, apache, linux, etc.

I started computer programming when I was 7 with BASIC, LOGO and PASCAL and I grew up with Microsoft, hence my personal preference for the ease of ASP and all things MS. As a web designer and small business owner, though, I use both for their various applications and PHP does play well with ASP if hosted with the right company.

Why must we choose? ;)