At the beginning of year 1 I would've agreed, since I was just starting out. Give it time though, you'll learn how to counter them or simply run away. Really just don't be close to them when they self res unless you have a 1 hit kill super, or if you're going to attempt a shotgun melee. But honestly the 4th horseman is FANTASTIC for doing a lot of DPS in like a split second flat. So if you have that exotic shottie, you don't even have to waste your super when a warlock uses self res.