It's funny, I didn't use condoms until I was married and well into my 30s, but I didn't use them to prevent conception. I used them to help me go longer before that sexy tingling feeling started happening. When my wife came home from her BF's house (where she'd spent the night) it was all too easy to finish fast, before she had any chance to enjoy her husband. My wife and I aren't big time "swingers" or anything like that, but both of us know that her BF has just finished in her and she's inviting me to take seconds, or if she's just come home, - full, it'll overwhelm me, especially if she's telling me about what just happened. Putting on a condom quickly after I'm fully erect helps me stave off ejaculation for much longer than a bare experience would. My wife just loves how she can make me cum whenever she likes, as fast as she likes, or she can put the condom on me and make it harder for me to cum as I can't feel much. Some lucky guys in here know: when you're taking seconds immediately after your wife's BF has pulled out and you have a condom on, you're not going to feel much - it'll be a "mind-fuck" more than anything else, but a condom may cost you your erection - There's just too much loss of sensitivity. Funny how the condom manufacturers don't ever mention that. What we discovered is what many guys before us have learned: when she's having great sex with her BF, hubby is not going to be able to get as hard for her as he used to. Some hubbies can't get hard at all when their wife is in a relationship and having regular sex with a BF. Put a condom on your half hard cock (if you can get the damn thing on) and it's not going to be the intense orgasm you fantasized about. And your wife? She'll just give you a WTF look and start getting dressed.
