Gregory's Server
Since dynamic dispatch is uncommon, you might think traits are less common, but they are not, especially default ones. Because they are used to define how generics fit together statically. Generics are interesting as they are highly abstract yet what happens in runtime is very concrete - no action at a distance.
2/n
@faassen One thing about traits is that it makes thinking about Rust code closer to how I think about relational databases.
I am reminded of
"Show me your flowchart and conceal your tables, and I shall continue to be mystified. Show me your tables, and I won't usually need your flowchart; it'll be obvious." -- Fred Brooks, The Mythical Man Month (1975)
which significantly shaped how I think about problems. Traits + ADTs put you in the same frame of mind.