The thing is, with Ouro and TFs, the game actively incentivizes farming. You can do content at level, or you can speed your way to a full build and then do all the low level content you want with full slotting, extra powers, and IOs. If you're a melee with only a handful of active options at low levels or a low damage class that's reliant on procs and IOs, its a very tempting choice to make. More so if, like a good number of us, you've done the content repeatedly and know how your AT works. You've done this all before and there's nothing new to learn, and now here's a way to get to where you want to be as efficiently as possible.