The best thing about (most types) of condoms is that they help protect you against sexually transmitted infections (STIs), including HIV. Lambskin condoms, however, are the one type you should not rely on for STI protection—they are able to block sperm, but not infections.
Condoms take effort and commitment
You have to make sure to use condoms correctly, every time, no matter what, in order for them to be effective.
May help sex last longer
Condoms can decrease sensitivity, and in some cases, that’s a good thing. (Eg. if you or your partner has trouble with premature ejaculation), condoms may help sex last longer.
Cheap and easy to find
Condoms are inexpensive (and sometimes even free from clinics and bars). You can find them just about everywhere, from truck stops to supermarkets, and even online. Plus, there are so many different kinds to choose from!
No prescription necessary
If you can't make it to the doctor (or don't want to), you can always use a condom.
Not so good if you're allergic to latex
If you're allergic to latex, you'll need to use a non-latex condom, or try another method.