By the way, I've just came up with an idea of what's really wrong with messengers like Telegram and WhatsApp: you can't read a message without telling the sender you've read it. And this forces you to answer. This way I often have to avoid viewing a message so they don't get notified. This is a huge annoyance which kind of ruins my life every now and then. Thanks G-d they don't insist to show when you are online. I would even pay some reasonable subscription to have a stealth mode so people would have no means to see whether I am online and if I've read their message.