Disconnections by one's opponents is inevitable, a good measure of it outside of their control due to technology problems - but surely some is just rudeness. However, if every disconnect were reported and every report acted upon, I'd think we wouldn't have a chess.com to enjoy. So, I just cope with it, never playing long standard games against people I don't know and always using shorter main time controls with bonus time added to give me time to move. Just one person's view, of course.
In live chess this happens to me alot. Should I report someone for this?