Daily standups can be useful when its a small group of people (3 or 4) working on the same project. In such meetings participants actually have the context to make meaningful suggestions based on other's updates "oh.. have you considered this? you should try this!"

Standups with more people working on separate projects are useless*.

My most recent standup with a group of 8 who were working on many separate projects spread across mobile, front-end and server. In this meeting, even if I did share some details about what I was doing, no-one else would have the context to help me. Also, it feels disrespectful to go into detail about something highly specific to my work while 6 other faces stare blankly as I waste their time. Ive heard stories from a friend's company of a standup with 30+ people across product, engineering and management. Could you imagine going into detail about your choice between an abstract class and interface on the call?

In such standups, the only sane action is to give a quick, high level update and mute yourself and go back to work. Standups like this should be ruthlessly dived down into several smaller meetings of people actually working together.

*Interestingly though, most people on my team love the standup for another reason - human interaction. Folks simply want to tune in and say hi to their team. In my opinion though, this isn't a good enough reason to keep unproductive standups, and the meeting would be better replaced with an optional 15 minute "coffee and chat" meeting. If folks want to tune in and chit chat, great - let them do it! But no need to waste people's time with mandatory "agile" ceremony.