Yeah, I've 5-boxed for quite a while, it was fun up to a point, but I don't really play that much, so I eventually dropped back to 2-3, depending on my mood. It feels a lot easier to just drop in and play 20 minutes whenever you want without a lot of set up to do anything. But then, I'm not obsessed about equipment, and to a large extent just like having all classes, which I have now have on both sides, since I've only rarely used multiples of the same class.

It's pretty normal I think