1. from a woman's perspective... no. "it ain't the meat, it's the motion" that satisfies the woman's sexual needs.
2. fully is one thing; comfortably is another. And, it might depend on the size of the woman's vagina. I'm a small, petite, somewhat "tight" woman... so, my preference would be a penis that's not too over sized.
3. most likely not.
4. not sure what you're asking... do you mean, impotent? sterile? eunuch?
1. NO
2. Large one, with enough lubrication.
3. Normally no
4. 0_0 don't know what do you mean by that.
Regards, John.