Dramas can teach more than one can think and one can find solutions to the lacks we seem to be programmed to live with, with the idea that finding a way out is impossible.

What I will say is, first you are not responsible for your childhood traumas and when you are aware of them, work on not feeding them. It takes time but surely, you'll discover your real self.
Second, love is a beautiful thing and if you have an incurable disease or difficult condition, it does not mean that your genuine person cannot love nor be loved but, nobody knows the day and the hour, live the fullest possible being happy and making others around you smile too, there is nothing to loose at that level.
Third, when you love, it's ok. Love does not hurt, only we, do that to ourselves and each other. There is nothing bad in being authentic and real because those are attributes and part of the nature of Love.

Love is not a state of feeling but more a state of Being that we use feelings to decode.

Each time there is a lesson to learn in order to grow and and uplift yourself in a K drama, go for it.