Why should an answer be different if the question was asked by a Delphi programmer, than a programmer from any other platform? Any decent language should be fun to learn, regardless of the tool you are using right now.
That said, I myself walked a way from Borland Pascal and Delphi (quite some time ago), over PHP and ASP.NET (using C#). Right now I am working almost exclusively on Ruby (and occasionally Rails) and I am perfectly happy with it. But, then again, it's matter of personal preference: I really enjoy Ruby's pure object-orientation and functional capabilities, as well as dynamical nature of a scripting language. So, it's all up to you and your personal preferences.
Although, one thing I can surely recommend is to stick with one of the major web-players, for pragmatic reasons: PHP, Python, Ruby, ASP.NET or possibly Java. I'm sorry to say that, but I don't think Pascaloid languages have any future anymore.