I can't stop snooping
Sounds like a bad habit. Who have you been snooping on?
I snooped on my family members private information even though I had promised them not to.
It is okay to be curious about others but you should be careful about snooping on others. People will feel betrayed and not want you around.
I just wanted to know and I'm fine with it.
You may be fine with it but others will not be which is why your family members made you promised. You should stop today.