I've maxed out my 98% Latias because I've caught 53/65 (~82%!), some of them even with pinap on double candy. It literally screamed to me: "Look, some nice 250+ candies you've got the by catching and transfering only! I don't even need rare candies! You have 2 fucking million stardust! I know you want me!"
I'm using it in the 6th slot of my main counter team against Latios. Most of the time Latios is almost defeated so the time I lose when rejoining makes up for it's lower damage. Also it's still as good as Tyranitar against Latios. I have better dragons, but I love it because I just maxed it out for fun and I am proud about my catch rate which allowed me to not depend on rare candy. It has also use as a bulky gym cleaner but I have enough specialists for everything people throw in anyways.
Just power it up for fun with all candies you get without investing RC! It's fun.