As you know me (the one and only former ASP Advisor), I consider myself good and advance user in ASP language. I am proud to say that I am currently leaving my ASP world and rapidly learning PHP! "ASP is a dying language" as expert says

I don't have any idea about .NET, but some people say that they are a good powerful language like PHP! Since it is the new version of the classic ASP 3.0 language.

My advice, if you have plenty of time, there is no harm if you want to learn .NET. For me, I will stick with PHP for now

Cheers...