Variety is the spice of life.

Meaning:

You use this proverb to say that if you do a lot of different things and meet different people, etc., your life becomes more interesting.

Having and experiencing a lot of different things is what makes your life interesting.

Example:

Variety is the spice of life, and there's a lot of it at the English Language Center. You can meet people from many different countries, and there are a lot of activities you can participate in.

Picture:

This picture was drawn by Erika Aoyama

http://oels.byu.edu