F1. Function of the To-Infinitive: The to-infinitive is used in many sentence constructions, often expressing the purpose of something or someone's opinion about something.
a. to indicate the purpose or intention of an action. In this case to has the same meaning as in order to or so as to. (e.g. I am calling to ask you about dad.)
b. as the subject of the sentence. (e.g. To be or not to be, that is the question.)
c. to indicate what something can or will be used for. In this pattern, the to-infinitive follows a noun or pronoun. (e.g. Would you like something to drink?)
more about the To + Infinitive
Idiom 365
On The Fence: not able to decide something.
Example: Always, I am on the fence at the ice cream counter, chocolate or vanilla.