Just out of curiosity (as I haven't needed to use a hex viewer/editor in web dev) - what use-cases are you using this for?
Reverse engineering!
That sounds fun ;)
Was there a first project you did that got you hooked?
Game hacking for sure, and it's still a blast. Playing around with variables in cheat engine or messing with save files is a fantastic way to get started as long as you stick to single player games (multiplayer cheating is way harder and usually unethical).