I have to say that part of the problem is you are not using it correctly. Just because the knob goes up to 10 doesn't mean that you have to turn it up to 10.
Your amp has EQ also, and it probably behaves just like the bass' EQ. You don't turn that up to 10, do you? Less is more.
I was only turning keeping the knobs at either extreme because of the fact that the knobs didn't always stay put at "in-between" settings (at least on my Ibanez), because I wanted a consistent tone and didn't want to have to remember where it was exactly everytime, and lastly, because it was just simpler. To be honest, part of it was just lazyness.
Also all EQ does exactly what your saying; it makes the frequencies at that band either louder or softer. That's what EQ does and that's what you want it to do.
Shelving EQ is not limited, and if it's too complicated what would you do with a parametric EQ? You can do a whole lot with shelving EQ.
Shelving EQ seems very limited to me. I don't want to simply boost or cut ALL of the frequencies above or below a certain point (especially if I can't control where that point is), I like to boost a certain frequency range, by a certain amount. A PEQ accomplishes this much better.
Your EQ knobs have center detents. When set there it is more-or-less flat. If you don't want any EQ, leave it there.
Don't worry about knobs getting bumped, just set them back to where you want them.
If I'm going to leave it flat most of the time, why have the knobs there at all?
Since you have no gigging experience you might be worried about this stuff, but there's nothing to worry about. I've been playing about 42 years now, and gigging about 38 years so I'll tell you what I do.
What it's good for is when some song you are playing would sound better with a dark mellow tone, or another would sound good with a bright cutting tone. You might want to use a one knob set-and-forget bass, but that like using one color to paint with. The rest of the band isn't doing that. Why limit yourself?
What I tend to do it give myself a slight bass boost, and generally leave it there. Not much, just about 10 or 11:00. Then I alter the treble control depending on what I'm playing.
Or, there might be a sound I use for certain songs. Another example is you might want some bass boost when soloing the bridge pickup. Or some treble boost when soloing the neck pickup.
Even on passive my basses I'm changing the pickup blend and the passive tone control for different tones. Not a lot, just a little of this or that.
But there's nothing wrong with finding a setting you like and leaving it there. If you are really worried about the knobs moving, stick some tape on them, or make a mark with a china marker (like a crayon), so you know where to set them.
But you will find after a while of using your EQ that you know where you like it.
That's my 2 cents anyway.