If i absolutely had to narrow my goal to just one thing, I think it'd be closeness.
Knowledge, of course, comes from paying attention, but knowledge is mostly useless unless you do something with it.
Understanding is closely related to, and reliant upon knowledge. Understanding is also useless unless you do something with it.
Wisdom cannot be attained from paying attention. Wisdom requires far more action than "just" paying attention. There's a reason why most cultures revere the wise - it's because wisdom is a truly rare trait. The effort required in attaining wisdom is staggering.
Finally, one only needs to listen to gather facts and reach a conclusion. Thought is hardly required at all. This is how so many people can be found spouting off talking points about subjects they really know nothing about. They listened. Had they thought about it, they'd have their own opinions.
So, while paying attention can gain me knowledge and it can gain me understanding, those aren't my goals. I like to use my knowledge and understanding. I like to use them to gain closeness in my relationships. I'm not just talking about my husband, or my siblings, or my mom. I like to have closeness in all of my relationships. And I can only gain that through paying attention.