A budding mechanic asks: "Should I work on Toyotas or Fords?" The answer matters little to the novice. You say that you "love thinking about building startups

A budding mechanic asks: "Should I work on Toyotas or Fords?" The answer matters little to the novice. You say that you "love thinking about building startups and the web projects." Have you ever built either? Become an engineer. Learn to design solutions to problems and implement them (on the web or otherwise). As you study, pay close attention to the patterns that begin to emerge. Think about abstractions of those patterns and potential methods of composing them. Technologies, platforms, frameworks, etc. tend to come and go on inconveniently short timelines these days, but the concepts from which they sprung usually endure to see multiple implementations.