Bootstrap is something I've been working with for over a decade. When I first started using it, I didn't quite get it. After a few attempts at building website themes from scratch on my own it started to make more sense.
Developing a complete, cohesive and consistent theme is a big job! If you just look at the number of components that Bootstrap offers you can get an appreciation for the volume of work involved in building all of your HTML and CSS from scratch.
I've been running websites with Firebase for years. It's reassuring knowing that you don't have to worry if your site is up and running or if your server is performing well. You know that your content is being served with the reliability, performance and speed that only Google can offer.
Beyond that, they make it super simple to integrate with their products. You simply log in, run a couple commands and your site is live. In this article I'll give you an overview of how I set up my websites using Firebase.