In the seven years I've been developing cool things for the web, I've worked with a lot of tools and frameworks. Any good full-stack developer has to keep up with the trends in both the UI/design scene and the back-end paradigms.
This is what makes the stuff you see. Good design, fluid UX, and a clean UI.
...and all the stuff you never see. The blood, sweat, and tears of a dozen servers toiling day and night. Let's not forget about them.
If we were all using magnets on hard disks to program, it would take quite a long time to get anything done. Thankfully, we aren't, and I use these tools to accelerate web development.