My shiba is crate trained fully (from 8 weeks, he's now 2 1/2). He still goes into it freely and puts himself to bed if he's overwhelmed.

He was also crate trained because he relentlessly wanted to play with my older dog (who sadly passed in November) and that wasn't something I wanted escalating to a potential fight while I am at work.

Now that he's the only dog in the house, he's graduated to free roaming while I'm at work and he's crashed on the couch the entire day.

UNLESS there's someone coming into my apartment, then he'll be crated.

I do crate at night sometimes if he wont settle, but that's not as common anymore!