Why does it take so long?

Can someone please tell why it takes babies so long to sleep all night? I am Tired of getting up at night. I think 6 months half a year is ridiculous to be getting up through the night what normal human being would put their selves through this kinda hell? My daughter is 14 weeks a little over 3 months and I already feel like I’ve been getting woke up for years! I’m starting to regret even having her this just doesn’t seem normal to me that any human would want to go through this it just doesn’t worth it to me getting up for so long at night seems so inhumane to the parents!!!