"They had high expectations about me... "
Did your parents say they really love you? If they do, then they should be happy to let you decide what you want to do with your life. Obviously, they don't like the road you have picked.
Also obviously you have a good thinking mind and a good heart not wanting to be involved with a religion that intentionally covers up pedophiles and has flip flopping doctrines done intentionally to keep good, naive people, like your parents, too confused to do anything but repeat what is said at the Kingdom Hall. How much brain power does it take to regurgitate what the reader at the WT just read aloud... and now the dumbdowned people are supposed to raise their hand and say the exact same thing back to the WT conductor? How dumb is that?
So, are you selfish for making better choices than your parents did?
No.
Your dear parents, week after week, month after year have been systematically brainwashed. JW..org tell them "Don't miss any meetings! Do everything like we tell you to!". JW..org knows they are brainwashing people. That is the only way they can keep the good people, obediently giving them money every month. Brainwashing. Smart people like you wake up and leave.
Hugs. I know this is worrisome to you. Do you have a nice (worldly) Aunt to talk to?