Look at the Coen brothers. All their minor characters are as interesting as their protagonists. If the smaller characters are well-written, the whole world of the film becomes enriched. It's not the size of the thing, but the detail. ↗
There are many facts showing that Putin's people enriched themselves by using power mechanisms so that's why for them losing power means losing their fortunes. ↗
The United States has been enriched by Muslim Americans. Many other Americans have Muslims in their families or have lived in a Muslim-majority country - I know, because I am one of them. ↗
After each experience, you grow up, you get enriched with something, and you don't know how you're going to be in six months, you don't know what you're going to want, what you're going to need. ↗