Everyone starts training jiu-jitsu for different reasons and there are many different schools / styles and approaches to this great art but
if you started in the 90’s as i did its was either because you saw BJJ dominated in the early MMA events or you saw this documentary..
Gracie in Action
“Yes is pretty heavy on the sale of the system and its superiority, but if you haven’t seen this you totally need to watch these historical fights and how jiu-jitsu can be put to use in a 1 on 1 fight / self defense situation”
since you are already here and maybe more into the sportive side of things here is a great highlight of the 2015 world championships