Hear me out for a second. I really don't understand this mentality of "yeah me too". It's great to be heard and all, but why contribute anything if you have no

Hear me out for a second. I really don't understand this mentality of "yeah me too". It's great to be heard and all, but why contribute anything if you have nothing to contribute. Furthermore, if you have nothing to contribute, why offer <i>ducks</i> to point this out and make it obvious that you're trying to avoid something?