I must be very old or very paranoid, but I wouldn't for one second think of developing from scratch using only public infrastructure. If I want to learn rail,

I must be very old or very paranoid, but I wouldn't for one second think of developing from scratch using only public infrastructure. If I want to learn rail, I'd start by installing it and running it on my local PC. What's the point of relying on heroku, aws, etc for just everything? What's the point of using github as the main hub for everything? I'm synchronizing stuff to github explicitly and carefully, my casual, day-to-day operations are all running on my own hardware, network and services. Even my most simple websites run first at home, then are sync'ed to the web after I've checked everything works fine.