Rpgs are a lot of work if you're trying to make tons of characters, and enemies, and write a story, and sidequests... I'm working on a 99 character rpg currently, so I often let my ideas get too... ambitious.
I'd recommend really trying to limit your game scope to 1 party of 3-5 characters and a pretty simple dungeon or map if you want to try making one. I believe anyone can make an rpg, it's just a matter of keeping your scope small on your first ones to prevent burnout. You'll learn a lot from it though, like how to stick to one overall mechanic for combat and how to balance groups of characters/monsters both against and with each other.