If you have the ability to percieve humor or appreciate a joke it is said you have a sense of humor. And if you cannot appreciate humor such behaviour is just inexplicable, or even irrational.
Humor provokes laughter or at a minimum amusement. Attempts at humor that do not elicit these responses are often termed “failed humor”.
An interesting quality of humor is its lack of consistency. One person might percieve the hilarity in a situation while another could be remain stone faced.
Value of a sense of Humor
Being funny and making people laugh is what a comedian does. The ability to experience mirth and all the good feelings associated with it require a sense of humor. Life can be very desolate without it.
In this sense recognizing the benefits of a sense of humor, encoraging it, even adopting as a personal or corporate value is a positive move.
Be Happy!
A key personal objective of mine is to seek pleasure (I have mentioned this in other posts) as long as it is not at the expense of others. This makes me happy.
Laughing makes me happy. Everyone might not laugh at the same things but to laugh at all requires a sense of humor and I would be lost without mine.