Dating is like...

Dating is like interviewing for jobs... 

You never know what they are really looking for

You don't know if they have already chosen someone and they are just interviewing you for fun

You don't know if you will actually like them

You spend hours getting yourself presentable and prepared for the big interview. 

Dating is like buying a house...

You only get about 80% of what you really want

You have to have a list of what you want in a house

You might sacrifice a lot for location

You don't know if you will like the neighbors

You look constantly, getting your hopes up with each showing or contract

It's scary putting all your eggs in one very expensive basket