Proclivity (noun)

1. A natural inclination or predisposition towards a particular thing.
2. A strong liking or preference for something.

Origin:

From middle french proclivité, from latin proclīvitās ("inclination"), from proclīvus ("sloping, inclined").

Examples:

1. He had a proclivity for fast cars and dangerous women.
2. She had a proclivity for gardening and spent most of her weekends in the garden.
3. He showed a proclivity for mathematics at a young age.
4. She had a proclivity for chocolate and couldn't resist it.
5. His proclivity for risk-taking led him to a successful career in finance.