I'm using a MBP 2015 myself, so I do have an escape key. Regardless I bound it to my Caps Lock key because that's the position I use on my personal custom keybo

I'm using a MBP 2015 myself, so I do have an escape key. Regardless I bound it to my Caps Lock key because that's the position I use on my personal custom keyboards. You can do this natively in "System Preferences > Keyboard > Modifier Keys". You can change all your modifier keys there to whatever modifier key you like. I very much prefer typing on a separate keyboard though, I don't really understand the people who just work straight on their laptop all day. Get yourself a screen (or more than 1) and work with a keyboard and mouse, far better ergonomically.