Take it, anything to be unattractive.

Be the best man/maid of honor at your Best friend's wedding? (Leave it, no place for mine there.)

Take it, have done it a few times already.

Have a thunderstorm as a ringtone?

Too easy, mine would want a record scratch (The bad one) as a message/alert.

Be rendered obsolete, as a human being? ( No choice here...)

In some cases we already are, but even so some still have worth. Others are just taking up oxygen.

Time travel? (Bonus: When would you go?)

Leave it, mine destination is worth the wait.

Punish animal abuse with equal cruelty? ( Those aren't people, they're just humanure. )

Oof, tough question. While I believe that justice should be served, some of these crimes are horrendous. So, Take it, an eye for an eye, those "people" are monsters and deserve it.

A lost wallet with a lot of money?

Leave it.

Incidentally, mine saw an episode of CSI: Miami that did that very thing. The only difference is the perp euthanized the woman responsible before letting the pitbulls tear her up. Merciful...

Allow the convenience of technology to enable your reliance of it? (The Haven from The Outer Limits is on now)

Take it...I'm pretty much a hermit anyway, so making things easier is all to the good even it it means isolation.

The perfect house on the interior, ugly and decrepit looking on the outside (and no you can't fix the outside)?

Take it, no woman would dare enter.

PlayStation generation, target of manipulation, multinational corporations, formulating your education...

Your only memory of life is what you watched on a screen?

Leave it. I've got some beautiful memories I don't want to lose.

Go on a vacation with your own family as well as extended family?

Take it, someday it'll be an easy thing to do.

Spend your life preparing for a future that, after a catastrophe can no longer exist? (Day After Tomorrow)

Leave it...enjoyed the movie, but wouldn't want to live in it.

Living in the Star Trek universe?

OMG Take it! lol

Go on a solo vacation?

Leave it

Live on a deserted Island

Leave it, no use for roller blades there.

Be impervious to harm, but it hurts all the same?

Take it!

A delicious dinner with someone you don't like?

It would be hard to enjoy the food with bad company... leave it.

Be able to have real Pokémons?

Take it, not as a trainer but as a caretaker and friend. Those weak humans weaponizing the collective species...

An irreparable marriage, that ends with an amicable divorce?

I didn't think of that, but of course you are absolutely right.

That happened with both my marriages. lol But we worked at it to keep it civil in both cases.

Be able to virtually roleplay and thus have it far more realistic?

Leave it, some people prefer a simulator over the real thing.

A mordernized steampunk car?