For me the issue isn't whether another language or framework is better for the job at hand than the tools you've spent time building up an expertise in. The thi

For me the issue isn't whether another language or framework is better for the job at hand than the tools you've spent time building up an expertise in. The thing that matters is that you don't develop a closed mind which prevents you from looking at ANYTHING else out there. Evolving your sklls and constant learning is the hallmark of a good developer, not whether they learn Rails or Python now. Curiosity and a willingness to admit that something new and better might be out there matter more than pseudo religious battles between ardent users of one or the other piece of tech. That's going to keep you in software development for the next 25-50 years.