To*keep good enf in root is damn hard and only suicude NT will use SI or even next hits to kill you*if*he*has*nbg*cooldown. Nanoregen isn't fast enough and if NT doesn't have nano, he doesn't have defence, no vs /follow,*bash,bash,stun,stun,fear,bash,*bash*enf.
Yay to paper pvp! SI means bigger chance to break root=death for NT. SI is only good in the end when enf doesnt have coon, heals, nano, it is ticket into the reclaim for NT, if NT casts SI at start, when enf has everything up, it breaks roots so often, every tick has chance to break root.
This is difference between good and bad enf and reason why you whine here.