I can offer something hopeful, too.
There comes a day when you finally 'understand'. You can tell that everything is right with your bike. And when something starts to go out of whack, you can tell that also. You might or might not know just what's wrong. But you'll be able to tell that something needs your attention. And you'll be able to find it, most times, before it does damage.
With me, it took a couple of years to really be sure. Now, I no longer worry.