Farming your preferred area in Grim Dawn consists of running and dodging your way to heroes and bosses, ignoring the trash mobs for the most part.
It would be nice if you could keep grinding something, to give them a purpose. Maybe ultimate ranks of constellations that would be very, very long to unlock?
I don’t skip trash mobs, they grant XP.
Not at L85 they don’t.
It’s funny when people call trash mobs worthless when i got several legendaries from them. Specially Ulzuin Chestguard and Markovian shield.
Legendaries don’t matter, what matters is how many legendaries per minute you can achieve. The amount of legendaries you get per minute from killing everything is substantially lower than what you can achieve by skipping trash and just killing bosses. I got a legendary from smashing a wardrobe once, does that mean I should smash every wardrobe I see? No.
I find that even more hilarious when in several of my SoT and BoC runs, all the legendaries dropped there were actually dropped by the trash mobs. None of the hero orbs or chests dropped a single legendary. Just crap epics and greens.
Im not saying that killing trash mobs is more efficient at getting legendaries than just rushing to kill the heroes. But saying killing trash mobs is pointless is a really exaggerated statement. Specially when you can kill them with AoE attacks while killing the heroes.
And i didn’t get 3 or 4 legendaries from trash mobs. I got over 20, several of them pretty good. And i’ve only been playing for around 350-400 hours.
we clearly play for different reasons, doesn’t make my way any less right then yours. Skipping trash and just running from boss to boss is pointless in my eyes. If you enjoy that then that’s great, continue wasting time logging in and out to run the same 2 or 3 bosses over and over. And I’ll continue running full clears of areas that I like to run, spending alot less time logging in and out. I only farm for M.I.'s anyways.
I would classify getting 20 from trash mobs over 350-400 hours as very lucky 
especially considering time spent leveling, dinking around with setups etc
I personally enjoy killing trash, but after 1500 hours played I can say they very very rarely drop legendaries.
http://www.grimdawn.com/forums/showthread.php?t=43876
Just leaving this here about this issue rather than repeating myself, feel free to share your opinion.