I'm and ADC main and I can say that is worth it, but you need to know which champion will you use depending if you're playing alone or with a duo in bot. For solo playing I almost always go Ezreal because is a safe pick and can carry even if my support isn't the best one. If I'm going with my duo I go something more aggresive in early phase like a lucian for example. I can even go with Jhin to secure the lane, the only problem is that if you are a good ADC you have perma ganks on bot with 3 or 4 people (MID, JD, ADC, SUPP) or even 5 some times. When I go in ranked if I can't choose ADC I just simply quit and loose 3LP, is better than loosing 15 or more LP