Undoing the bad law first, because I can always do good afterwards.
Would you rather be able to fly, or teleport?
Flying would be fun for a while, but the novelty would wear off eventually. Teleportation in the long run would prove to be more practical.
Live (as a plebe) in ancient Sumeria or ancient Egypt?
Ancient Egypt, providing Moses is coming along soon. 
Have dinner with Rosie O’Donnell or Lena Dunham?
Rosie O’Donnell, she’s more reasonable.
Be a cheating spouse, or the one cheated on?
I’m asexual, so I don’t care if my partner gets it elsewhere.
Have a marvelous speaking voice but be unable to sing anything, or sing like Audra McDonald but talk like Fran Drescher.
I’m more likely to talk than sing, so I’ll go with the first one.
Model on a Paris runway or concert pianist at Carnegie Hall?
I’ll take skills over looks any day.
go into space or the bottom of the ocean?
I get bad motion sickness, but I’ve been OK on those reef-tour submarines, so I’ll choose bottom of the ocean. That is, if it is a GOOD part of the bottom of the ocean, not the bottom of the ocean near the shore, where I’ve already been and it’s not that great.
Leave your car in the shop for repairs for 3 days, or have an urgent plumbing emergency?
I’ll leave my car in the shop. Plumbing emergencies can be costly and scary.
A free ticket to your favorite musical artist (or group) or your favorite sports team?
Musical, musical, musical. Always musical.
Go to the inauguration of your favorite past US President, or go the inauguration of Hillary Clinton in 2020?
I like leaving the past …there, so Hillary
You win free dance lessons, do you choose Swing or Salsa
Swing.
Ballet or tap dancing?
Definitely tap dancing.
In the Philly cheesesteak-American, or cheddar?
Definitely cheddar.
Beloved pet has cancer, but is not suffering. Euthanasia or expensive chemo?
Euthanasia, but only once the discomfort hits. If a surgery could save/extend a life I would certainly go for it. (In fact, I dropped a few thousand for my dog’s comfort just last year.) But chemo? That’s pure misery, and there’s no way to explain to a dog why it’s happening or when/that it will end.
Just no.
Someone’s planning to gift you a car. Would you choose the 1988 Fiero or the 1972 GTO?
'72 GTO - the Classics never get old
For an hour each day experience that feeling you get when you’re leaning back in a chair and realize you’re starting to fall backwards, or spend that daily hour experiencing the feeling you get when you lose your wallet/keys?
Losing my wallet/keys. If it happens every day at least I know it will end, and it’s less unpleasant than feeling off-balance like that.
Go to the mountains or the beach?
Mountains.
Guinness or Bass?
G in the winter, B in the summer.
Visit Mars, or Venus?
Mars seems more hospitable.
It’s your anniversary. Do you take your SO to a fancy steak restaurant and drop a couple hundred, or go see the music group of your choice with front row seats?