You have to know the person you're dating.
1. What are your hobbies?
It's always good to know if you share hobbies or personal interests, but sometimes it's good to know if one bothers you.
2. How old are you?
It's good to know how old the person is, a couple years in your young adult life could mean a lot in terms of maturity and where one is in life.
3. Views on sex
If you haven't had it already, you might want to talk about it at some point.
This is sort of the same as #3.
Can't promise how this one will go...
6. Views on marijuana
7. Goals in life
It is important to know what one wants in life if you are serious about dating someone- it might affect your future as well.
8. Do they want to continue living here or live somewhere else?
This is sort of the same as #7.
If you ask these questions before you date someone, you'll feel a lot better that you did.