Short answer: yes—Wikipedia: Artistic Roller Skating. I’m guessing your country’s governing body (e.g. USA Rollersports) could direct you to some if you were interested.

No comment on headphones vs. not; I’d never even heard of it until this post, but I found some free audio for people in the same curious boat: Binaural Beats

You can, but you may have to bounce around servers a bit to find one that works. I’ve had good luck with servers in Norway (not 100%, but better than other countries).

As a dog owner in a city full of smokers, I can verify that this is true.

I don’t know about ”most people in the workforce.” I’m in my mid-30s, and not only do I remember it once or twice from my childhood, I also encountered it once in 2013 (at a brewpub somewhere in New York). You’re right, though, that it becomes less of a thing with each passing year.

I’m upvoting to encourage you to give Fudge cheese.

These things fall into two categories—stuff that you buy because the quality is unquestionably higher than alternatives, and stuff that may or may not be a little bit better than alternatives but that you have strong, minimally-rational feelings about.

I find the second category more fun to talk about, so I offer up the fact that this is a C&H [sugar, US based] house. Once my wife brought home some other sugar, and I complained until the bag was gone.

I’m neither a writer nor a scientist, but there’s a copy of this on my bookshelf and I wish I could lend it to you: Deadly Doses: The Writer’s Guide to Poisons