I am noticing a pattern - I really enjoy going somewhere specific to do something.
In the past week, I have visited my local library branch twice to work on my linear algebra homework, and both times, I was quite productive. The library just got remodeled, so it's pretty nice inside. (Unfortunately, the chairs are uncomfortable - as in, my feet don't reach the ground - but I was able to move one of the comfy sitting chairs to a table and use it instead.) There are computers there, but you have to reserve one if you want to surf the Internet, and there are no computers at the plain tables where I sit. There are virtually no distractions - just enough so that when I get bored, I can wander through the stacks for a few minutes to invigorate myself.
I am the same way about exercise. I have an annual pass to our local rec center, and going there to exercise is actually easier for me than exercising at home, or by walking around outside near my home. It's a dedicated place. It's a trip. I think I like going places to do things.
Last night, Ed and I went to Perkins (a 24-hour chain restaurant like Denny's or IHOP). We had dinner, and then pushed the plates and condiments to one side of the table while he joined me on the other. We spent the next hour or so hashing through some math that I didn't understand.
It was perfect. The flat, smooth plastic table was ideal. The restaurant was nearly empty, so I didn't feel we were stealing a table from our waitress. (I did overtip when we left.) Our drinks still got refilled. It was just much nicer than attempting the same thing at either of our homes.
I think my preferences in this respect may be the opposite of what most people want. It's not that I don't value being home. I just feel like I get more done, more easily, and with more fun, if I go to a dedicated space to work.