I use Firebase because Serverless. You hipsters think it's Lambdas? Back in my days serverless meant something completely different.
I use Ubuntu because I had no money for a Mac and Windows was not supergood at development
I use TypeScript because it's ES6 with types. And ES6 is sugary JS and I like sugar!
I use Vue.js because AngularJS got bloated and it's own developers ditched it leaving market with no alternatives for some period of time. And it turned to be an amazing alternative.
I use Redis because it is amazing! Seriously, one of those tool that you learn and can't imagine life before without it.
I use Node.js because sometimes a little JS on the server is just what one needs.
I use Amazon S3 because Simply Smart Solution for storing all my objects in the cloud.
I use Markdown because it makes writing technical documentation fun and easy process.