Besides your checked bag (if you check one) will be waiting for you as soon as you walk into the baggage claim area.
I guess you were in the aisle next to it, and I'm sure whoever was in the window didn't even notice that. I had that experience once and my seat had no way to recline because I was at very back of the plane, the restroom was right behind me but I was next to the window and I didn't smell anything...
Some airlines are coming with a solution for all this subject.
There's also some extra storage room for a laptop or purse/murse under the seat.
The Russians did try to solve a similar issue of lack of restroom space for the Sochi Olympics.
http://www.eonline.com/eol_images/Entire_Site/201416/rs_560x415-140206122657-1024.sochi-olympics-toilet-bathroom-020614.jpg