And the lack of ability to "get around" all day is a benefit, let me tell you. Your mind would be thrilled if you said "no, I can't do that" more often. It sounds like your workspace is pretty noisy but your rush-hour commute might be contributing to your bad days more than you think.
As far as workspace, we have that new fangled open office (read: too cheap for even cubicles). Granted it's a startup and there are much better things to spend money on, plus rapid growth, etc. Everyone has to wear headphones and the biz always comes in to talk.
I'd still rather remote. It solves all problems, and I can walk and socialize on my own time. Let's be honest, most work chit chat is either about work, or petty and shallow.
Chit chat at work wasn't always annoying and disruputive. Well maybe to some it always was, but the workplace is usually an intersection of some interesting parts of your personal community, ie the mutual suffering everyone else goes through for whatever reason, to be here in this office 8+ hours a day. Sitting around all these people existing in chairs, who in their digital worlds totally forget about the noises they're making in the real world.
Your work chit chat is what you make it, is what I'm trying to say I guess. If your office is totally extroverted and won't give anyone any peace, look around for other people who aren't into the prescribed "work culture" and work together to make one of your own. At least your work days might be better.
I've never worked somewhere that I couldn't get to within 20 minutes by walking or cycling.