Changing my main... again

Well I main ADC but since the update I've quickly learned that there is shit I can do against assassins or especially mages/mage assassins... Like , He builds tank, uses ult to get behind our line, kills my literally with two abilities only, then ults away.

Whats a guy to do? Well counter build right? are about as good as it gets, I could try building a But that'll reduce how much damage I can do by a good chunk.

How come every single class in the fking game can build a HP/Tank heavy build and still do more damage then someone with all AD items?

Example, Rammus destroyed me 1v1, he had these two items for damage , so to counter I build So he has two Damaging items with maybe 30 ap or less, he had full tank items. And he destroyed me. I got literally destroyed and constantly dived on by rammus because he's unkillable, but can easily out damage me.

Thanks riot for making my main role the hardest role in the game, we have almost 0 escapes, we have no items that make us tanky enough to not get squeshed by a fed mage/tank/assassin/anyone not an adc. And you made us look super scary so now everyone fk's front lines and just uses all of there abilities to dive over the front line and fk you up. So you have to stay extremely far away from the action until everyones used their flashes, engages, and ults in order to just get in range to help your team. Thanks, again, time to change my main cause fk being the hardest role in the game.