I just unlocked Unhindered and Windwalker perks in Light Armor, which are generally considered unnecessary and wasteful. And I just love how it makes me feel. People say these two perks are useless because light armors are very light anyway to begin with, and you don't save much weight. And people in light armor don't have to worry about stamina. But with this I'm better than when not wearing anything. I can sprint and sprint and not run out of stamina in battle. I also like taking Merchant perk in speech. Money is not a problem in later game, people say. Any investment in speech is a waste, they say. But it makes my life so much less aggravating in Skyrim until you get to that point.
Which perks do you love that other people think is a waste?
I remember a thread complaining about most perks being useless in Skyrim, and Fallout 3's being better. Not sure which skill tree is the best, one is just as rewarding as the other one when it comes to the type of class that I'm using which primarily uses light armor, one-hand sword, destruction, so I guess I consider them the best.