I don't even know if I want kids anymore 🙄

I need some affirmation. I'm a nanny for a two year old boy. Seriously the hardest kid to take care of. Never listens. Throws a fit about everything. Screams at the top of his lungs until he gets what he wants. I have always wanted kids one day... But now, I'm not so sure. Makes me want to rip my hair out. 
Is nannying harder than caring for your own kids..?  I hope so. Because I couldn't deal with this 24/7. Any nannies/babysitters out there who can help reassure me raising your own kids is different? 
(This kid also has NO discipline, so I'm sure that plays a part in his behavior)Â