True freedom.

I really don't care too much. I wouldn't mind being female, but I'm also totally cool with being male.

While it's not as strong as 'wish', I'm definitely curious and given the chance to try it out for a day, or week, would definitely not say no. XD
I feel comfortable the way I am though and have no real desire to change.

I've dreamed about being the opposite sex though, and that was interesting for sure.

I'd like to have been born an attack helicopter.

Nope I like being a male, besides being a woman must suck according to popular media.

OP talks about birth so the creature you are when you get pushed out of your mother's vagina. During that time you have the second your father's spermcell gave you. Either X a second X or an X and a Y chronosone in 98.5% of the cases. Defining you as either a male or female or in the cases you don't have XX or XY you are called intersex. But a child in the making is 'essentialy' female (only the sibgle X chromosone is active) but  you could also define that as genderless, since a single X doesn't define anything. That's why both males and females have nipples. An embryo doesn't start with creating genitals, and the second X or Y chromosome doesnt do anything the first 5 weeks. But after that period the second sex chromosome will do its work until that your gender is not fully a girl it is essentially single X meaning its indifferentiated.

http://factmyth.com/factoids/all-mammals-start-as-female/

Isn't that only because it's much easier to sleep around as a woman?

I'm fine with who I am but I'd like to experience another life as a female. Just to understand it all.

I'm pretty sure living longer depends on your life decisions and not your gender.

Pen^s for the win for me. I like using logic even though its not wanted in these times .