What is your flaccid penis size in inches?
At its smallest, about 3"
What is your erect penis size in inches?
At its largest, about 7"
Would you say you are happy with your penis size?
Depends on whose is next to it. At its largest, yes.

Would you describe your penis size as small, average, or big?
Average, or ever-so-slightly above.
How old were you when you first masturbate to ejaculation?
I'd guess 11 for real ejaculation. I know I'd been masturbating to orgasm for far longer.
How old were you when you let someone see your erect penis for the first time?
About that time, about age 11, I showed off to my Dad and a friend. Different occasions.

How old were you when you first had a sexual encounter with someone?
I was 18.
Was your first encounter a hand job, oral, or intercourse?
Hand, oral.
Do you describe yourself as gay or straight or curious?
Gay
Have you had a sexual encounter with another man?
Uh, yeah. Also a few girls.
Has your penis size ever kept you from having a sexual encounter? (too embarrassed about small size)
No.
Have you ever struggled with premature ejaculation?
I never have. In fact it takes me a long time to cum. Not complaining.
Do you masturbate regularly?
Varies. Not as regularly any more.
Married or single
Partnered.