Linear algebra is frequently taught very poorly. I think most university courses in the subject are kind of watered down and reduced to algorithms you can memorize -- which, ironically, makes them tough going for the strong students.

Maybe you just had a bad approach? Linear algebra is loads of fun, methinks. And you need a good teacher or appreciation of the material for that.

And it's something you slowly forget if you don't put it to use.

> I felt like linear algebra was the low point in my math career

What do you consider to be the high point?