I think it doesn't matter
Whether I reply or not. Whether I text or not. Whether I keep in touch or not.
Because I don't matter to 'em like how they matter to me. Hangpa won't feel sad when not hearing for me even for just few days. Hangpa doesn't really care what's going on even if we used to know about almost everything we do. Hangpa doesn't feel I am someone to share your concern or your worries.
In short, it doesn't matter. Because hangpa lived well, lives well and will live well without my presence. They are happy so I gotta deal with my own problems. I am sad? I am mad? Deal with it yourself.