WHY!?!?

I baby proofed our house a month or so ago once Little T started rolling around.  I however did not Little T proof the house. 

This past month little T has been scooting around the house.  He slowly figured out how to get up on his knees and then he slowly figured out how to actually crawl. 

Then he started crawling onto and into things. I actually lost him and then found him here. Don't mind the lack of clothing, it's dang hot in Texas.

Then this happened. And keeps happening.  A lot. Ignore the dirty camera lens. And the kitchen cupboards that WILL NOT stay closed.

He's 6 1/2 months old.  He should not be pulling himself to standing.  Last night, I was sitting on the couch and he crawled over to me, pulled himself up, then proceeded to lift his leg up like he was going to climb the rest of the way up the couch.

Why must older busy brothers inspire younger brothers to become busy too?