[codedokode]

It depends on the country. In Russia many people use Telegram for work and for personal communication (almost every young person has it so you cannot say it is used mainly by criminals unless you count everyone as a criminal). Telegram also has channels, so you can for example read news or (if you are young enough) funny memes there. Also, Telegram is uncensored unlike web, so you can watch videos with exploding tanks if you are into this kind of stuff. But at the same time in Japan it has a negative image of an app used for shady things.