I'm already the former, I'll keep it.

Bioluminescent, or biomechanical?

I'll choose bioluminescence. That suggests divine intervention, whereas the biomechanical one implies money, which I DO NOT have :')

Have perfect facial recollection, or perfect textual recollection?

I'm well into the latter, mine keep it. Very practical in auto tech jobs.

Be loved with all their heart, or what's left of one?

Be loved with what's left of one. People who love with all their hearts concern and perturb me, and I don't understand how they do it.

Have your worst enemy be stuck in 3rd grade their whole life, or forcing them to teach 3rd grade their whole life?

The one day of 3rd grade her whole life, that damn waif who "wanted to be my friend" and I beat her up for it...

Good to know, she won't even get that.

A wood fireplace, or a gas furnace?

Wood fireplace, because it heats you three times -- once when you chop it, once when you stack it, and a final time when you use it in a fireplace.

Food tastes like crayons for the rest of your life, or food tastes like cardboard for the rest of your life?

Cardboard over wax! Ugh to both. But maybe you could at least salt the cardboard...

Wear the same outfit every day or have different outfits but they are all the same color?

Different outfits in the same colour. Pretty much my wardrobe actually

Live a year as a fly or as a cat?

The short life, yet long death of a fly... that has purpose.

Enjoy eating food, or live fearing it?

Enjoy eating!

Live long and prosper quietly or live a short while doing dangerous adrenaline junky things and famous for it?

Live long, but die anyway.

Trust a person extending their right hand, or one who extends their left?

Right hand; You're more likely to hold a weapon in that one and extending it proves you aren't.

Would you rather bare the elements for a week on a long, extended hike out in the wilderness or spend that time stuck inside one room?

I'll bear the elements alone the rest of my days, where no woman would follow.

Would you rather have a beer, or alcohol?

Alcohol, I hate beer.

Would you rather live in space or underwater?

Underwater, space is easy because it's empty.

Would you rather build your dreams, or buy them?

I haven't been very successful at the former, so I would do the latter if I had the money.

Would you rather be really successful at something you dislike, or only partially successful at something you enjoy?

Partially successful at my job, mine don't care about the money.

Supportive silence, or the wrong words?

Amended

confused :~

Oh jeez supportive silence would really be an awesome change to the other which is my usual!

Lend a helping hand or pay for the service another needs?

Lend a hand, you get what you paid for.

Looks, or Loyalty (One is the inverse of the other)