Rails has allowed me to move from being a product/programme manager to start up owner / developer in six months. I've managed the development of products using PHP and .NET technologies, but when it came learning to code myself, Rails enabled me to learn and iterate quickly. Ruby is beautiful, and the Rails community is both prolific in terms of making the gems you need and responsive when you have problems. 12 months ago I was coldly agnostic about frameworks, I am now a bit of a fanboy.