Reading the Dictionary

Use (verb)

Use (verb): take, hold, or deploy (something) as a means of accomplishing a purpose or achieving a result; employ.

It's funny. The word "use" in a sentence stating "He used me!" usually generates a negative outlook. We begin to feel judicial and want to protect them from exploitation. Nobody wants to feel used. Being "used" makes you a noun under 'object' instead of 'person'. Person, place or thing. But you were a person being placed as a thing.

Biblically speaking, being used was a honor. To be used as in instrument in the greater good was the honor. The greatest privilege.
The greatest man who ever lived, gifts you with the opportunity to be used as a pawn in the chess game between good and evil.

When someone of at statue needs assistance in anything, wouldn't we offer ourselves up? Even if we didn't have the skill they were looking for, you'd still volunteer to learn.

Being used, being useful is a target we all aim at at some point. We get offended if someone close to us asks another person for help instead of us. You are this craftsman of importance. Or maybe you're a mechanic. Your friends all know you as a man good with labor. Your friend's car breaks down, or they need repair on their roof. You, a man of good labor, can easily address these problems. Instead, they look in the phone book and call a number under repair. Honestly, your thoughts sprint to the finish line forgetting to think before getting there. You are hurt they didn't think of you. Because you wanted to be used.

People only want to be used on their terms and not on others. If you allow it, you feel useful. If you don't, you feel used. You want to feel important but under your definition of importance. The human mind is confusing.