What's Marriage?

I don't believe strongerly in marriage now. So many things happen at home. Upset, stress disappointing and all the negative thoughts. I really don't understand why pple get married, have family without accepting the partner's negative side.. I'm really afraid of all these things..
unhappy stuff..
All I have thought having a happy family compared to others was like all wrong now.. What's happening.. I don't understand. I thought of having my dream career and happy family. why all those shit things happening..

I really hope I could faster step into the company to work and avoid those unhappy stuff..

Peace Please...

:(