Say this to explain something that you want, which you think should be easy to have.
All I want is a job where I can make a decent living.
All I want is a little time to myself.
All I want is to go home, play with my kids for a few minutes, watch some TV, and go to bed.
People usually use this phrase when they're a little frustrated.
You can also say "All I want to do is ___" followed by some action.
All I want to to is go home so I can snuggle with my little angels.