I'm sure you have. I have at least. It's a common question, and with that, comes a common answer.
"Because I want to help people."
NOTE: I'm not putting offense to this answer, it is a good state of mind. You shouldn't go into a nursing career (necessarily) if you do not want to help people.
BUT...
Why else do you want to become a nurse? Why do you want to help people? It wasn't until I got asked this question that I wasn't sure what other reasons I had. (That's not a bad thing, but most people have specific reasons on why.)
Although at the time I seemed clueless, it wasn't until I started thinking about my history with hospitals that I knew why exactly I wanted to become a nurse.
My mom has medical issues that need tending to every other day of the week. When I was 9, I had a medical issue that wasn't even solved until after a few weeks, maybe months later.
So why do I want to become a nurse?
Because all (or most) of the nurse I have dealt with (either for myself or my mom) have all been super nice and they did their job well. I want that. I want to impact someone's life like that so they, too, can remember when someone helped them in the most positive way possible.
I want to be like one of my mom's nurses. He makes everything easier. He constantly cracks jokes and makes us laugh. He has an easy-going personality and he was easy to talk to and approach the moment that we met him.
I want to impact people's lives, I want to make a difference. I want to help put people at ease and not make them so freaked out about being in a hospital. I want to be someone's heroes like the nurses I had were to me. (And the doctors, they were cool too!)
Some many people look down on nurses as if their job is not important, but without them, most people wouldn't get the love and care that they need or even want. I want to give that to people. I want them to know that I genuinely care and that I genuinely want to help them.
Why do YOU want to be a nurse?
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"Purpose is the reason you journey. Passion is the fire that lights your way."
-Author Unknown