- emotions for the project's idea. It's like having a favourite football team of something like that. If the project seems important and awesome the one buys coins just to invest in the project and doesn't try to sell them when one sees the price is going down or up.
- emotions about loss/profit. Surely people can have true sadness when realizing the money that was invested is lost or get very exited when a coin brought huge profit.
I think both cases are rather fine and people on this forum mostly aren't emotional about projects anyway IMO.
I agree they get emotions about profit and loss and that's something I completely understand! I love money! I've made money with NEO, I don't love NEO.... I love the money it made me...
Here is an example of what I'm talking about
https://bitcointalksearch.org/topic/m.603993
(I only searched for love and took this post)