The way you said it can be construed as something other than your personal choice. You are asking why people like a "brick" like the Note 8. When you said it is brick what are basing it on? People look at screen body ratio or screen area to weight for defining the whether it is a brick. If you look at these metrics, Note 8 is not a brick at all.
Basing it on how it felt in my hand, top heavy too.