Because I sure as hell don't, feels so bad getting damaged by the random source that's not even apart of a champions kit.
PtA being the biggest offender making you take bonus damage from all sources.
as a person who uses three out of those 4... no i dont...
every "mastery" being changed to a "keystone" is absurdly stupid
we need masteries like season 4
http://abccbaandy.github.io/league-S4mastery-calc/
not "fulfill X situation to get a shit ton bonus burst damage"
The only one you listed that i dont like is aery, its like just a flat boost to poke and healing with very little gameplay (if picking up aery was more significant tho?)
I dont mind PTA. If you stayed in range for three AAs to stack it, then the person AA should be reward for taking advantage of your mistake. I like aery as a concept as well, I just think it needs tuning. I wish electrocute was more like thunder lords. And comet usually can be dodged so not a big deal
Honestly I think Electrocute is the biggest offender for me, it ads a lot of burst for mostly just playing as usual for most champs that take it. and it does more dmg than comet that can be dodged. Dont really mind the rest of them.
That being said I generally dont like the new keystone system, ranging from too situational to doing almost nothing to being super strong. (does anyone take celerity, waterwalking any more?)
is forced to use either aery or comet. 
