Is humour necessary?

Recently humour has become an important issue in our daily life because of the physical health, mental health and social benefits, but could we live without it?
First of all, a lot of studies have proved that laughter and humour binds people together plus increases hapiness. Humour also strenghtens our relationships because the best way to keep friends is laughing together and making fun of hilarious events and situations.
Personally, we use humour and laughter everyday to keep our friendship and we are the best example that this works.
In conclusion, humour has a lot of benefits and in our opinion i'ts absolutely necessary and don't forget that it's free and the best medicine for all the problems.