Again, it's all in what you want to do. Pissing off the neighbors vs. learning to play well. The people who have learned how to play well and not learn things like chord structure and harmony, even on the most basic level, are few and far between. The vast majority of kids who don't learn rudimentary concepts of music theory never get past the subsonic experiments stage, their experiments a dismal failure from not knowing what to do next. Then their bass sits under the bed for 10 years until they sell it for cheap.
I always answer questions on here assuming that the person asking the question wants a real answer. And I always assume the person wants to get better. Pretending they're going to get good results from blindly making noise on their instruments with no clue of anything or suggesting they don't get a teacher when it's the #2 reason why most of us who are good at playing bass got there (#1 is a good work ethic) isn't going to help a person get better.
I think the thing that bothers me most is it seems like you're separating the concepts of having fun vs. working. I think working to achieve a goal and achieving it is the most fun you can have. Believe me...I have a whole lot more fun with the bass now, being able to play it well and do most of the things I want to do with it, than I ever had when I was just aimlessly whacking at it. And I had a lot of fun working at it...I learned things in my lessons that I was able to apply to the music I REALLY liked, and I got better and better and more skilled and had even more fun.
So I could never tell a kid just to go bang on the bass for a year or just have fun with it and not worry about notes or structure because it's way more fun to be good at it. Kids don't need to be told to just go bang on a bass. They'll do that anyway. They need to be told that there's a whole new world of expression in that bass if they're willing to put in a little effort in finding it.
This whole thing is pointless. I like your style.