Is the volitional form of i-adjectives often used?


According to this [question](https://japanese.stackexchange.com/a/3301/4216)
the volitional form of i-adjectives is used _quite often_ -- on a daily basis.
But I almost never hear it. I almost see it exclusively in books (or written
documents). And if it would be used in a dialogue it would almost always be
used by a man.

On the other hand, I hear quite often adj-i+でしょう.

So my question is the ～かろう form that much used?




This form is [classified as modern 口語 (as opposed to 文語)](http://www.hello-
school.net/harojapa007.htm), but it sounds old-fashioned nevertheless. It's
not something we hear every day. We mostly see this form in fictional old
person's speech (like in the original question) or in a few fixed expressions
like [安かろう悪かろう](http://kotowaza-allguide.com/ya/yasukarouwarukarou.html). よかろう
is often used by a pompous, old and/or noble person in fiction. If someone
around you used よかろう in reality, it's likely to be a joke.

By the way, is that form really called the "volitional" form while the meaning
is ～だろう? It appears similar to 行こう/見よう/食べよう, but the meaning is totally
different.




This form is [classified as modern 口語 (as opposed to 文語)](http://www.hello-
school.net/harojapa007.htm), but it sounds old-fashioned nevertheless. It's
not something we hear every day. We mostly see this form in fictional old
person's speech (like in the original question) or in a few fixed expressions
like [安かろう悪かろう](http://kotowaza-allguide.com/ya/yasukarouwarukarou.html). よかろう
is often used by a pompous, old and/or noble person in fiction. If someone
around you used よかろう in reality, it's likely to be a joke.

By the way, is that form really called the "volitional" form while the meaning
is ～だろう? It appears similar to 行こう/見よう/食べよう, but the meaning is totally
different.

