I answered "NO" for using condoms as that is my preference and normal state of affairs.  There are times when I do insist on a condom though, particularly if I've met a guy or guys at a lifestyle club.  That's a risky situation so I insist on a condom, although I don't really enjoy it as much, plus, Mr Hw hates the taste of condoms and can taste and smell them on me after I've had sex using them.  Also, if a guy wants to use a condom then I don't object.  I figure that he might know something that I don't, such as, that he potentially has a STD.  That will most certainly be a "one and one" guy though.
Guys I meet online normally provide (or offer to show me) a recent STD test because I request that in my profiles.  Guys who pick me up at a bar are a mixed bag.  It depends on how I feel about them.  I've NEVER gotten an STD nor pregnant.  I would much rather get an STD than pregnant though!  I don't understand that kink AT ALL.  Fear of pregnancy kept me away from vaginal sex when I was young and my sister and friends were having vaginal sex.  I stuck with oral and anal only.  I really enjoyed anal so I was fortunate in that respect.
All of my years of cheating I NEVER used a condom, it just never worked in the heat of the moment.  I was certain that my husband would have had no doubt that I was cheating if I had returned to him smelling or tasting like condom.  But, he says that he often can't tell that I've had a guy cum inside me bare though.  That also "depends" and when I was cheating I don't think he would even have considered that I tasted "off" for some reason (other guys cum inside of me) and he went down on me often after I had (unbeknownst to him) JUST had another guy cum inside of me.  The lake was where this happened all of the time.
Mrs Hotwife
Edit:  Also, can somebody explain to me how a condom discussion has anything to do with "vaccination"?  Did I miss something?  Are STD's or pregnancy now limited by some sort of "vaccination"?